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authorJason Gunthorpe <jgunthorpe@obsidianresearch.com>2013-10-06 12:43:36 -0600
committerPeter Huewe <peterhuewe@gmx.de>2013-10-22 19:43:07 +0200
commita2871c62e1865c45f87a9343de76f727fb7a0ffd (patch)
treeca319f1a69800b161c002edf667120143fda7c84 /drivers/char/tpm/Kconfig
parent4c336e4b1556f4b722ba597bc6e3df786968a600 (diff)
downloadlinux-a2871c62e1865c45f87a9343de76f727fb7a0ffd.tar.bz2
tpm: Add support for Atmel I2C TPMs
This is based on the work of Teddy Reed <teddy@prosauce.org> published on GitHub: https://github.com/theopolis/tpm-i2c-atmel.git 34894b988b67e0ae55088d6388e77b0dbf10c07d That driver was never merged, I have taken it as a starting port, forward ported, tested and revised the driver: - Make it broadly textually similar to the Infineon and Nuvoton I2C driver - Place everything in a format suitable for mainline inclusion - Use high level I2C functions i2c_master_send and i2c_master_recv for data xfer - Use the timeout system from the core code, by faking out a status register - Only I2C transfer the number of bytes in the reply, not a fixed message size. - checkpatch cleanups - Testing on ARM Kirkwood, with this device tree, using a AT97SC3204T-X1A180 tpm@29 { compatible = "atmel,at97sc3204t"; reg = <0x29>; }; Signed-off-by: Teddy Reed <teddy@prosauce.org> [jgg: revised and tested] Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [phuewe: minor whitespace changes] Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Diffstat (limited to 'drivers/char/tpm/Kconfig')
-rw-r--r--drivers/char/tpm/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index ade71c134a1a..f9085860b716 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -33,6 +33,15 @@ config TCG_TIS
from within Linux. To compile this driver as a module, choose
M here; the module will be called tpm_tis.
+config TCG_TIS_I2C_ATMEL
+ tristate "TPM Interface Specification 1.2 Interface (I2C - Atmel)"
+ depends on I2C
+ ---help---
+ If you have an Atmel I2C TPM security chip say Yes and it will be
+ accessible from within Linux.
+ To compile this driver as a module, choose M here; the module will
+ be called tpm_tis_i2c_atmel.
+
config TCG_TIS_I2C_INFINEON
tristate "TPM Interface Specification 1.2 Interface (I2C - Infineon)"
depends on I2C