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| author | Jason Gunthorpe <jgunthorpe@obsidianresearch.com> | 2013-10-06 22:43:36 +0400 |
|---|---|---|
| committer | Peter Huewe <peterhuewe@gmx.de> | 2013-10-22 21:43:07 +0400 |
| commit | a2871c62e1865c45f87a9343de76f727fb7a0ffd (patch) | |
| tree | ca319f1a69800b161c002edf667120143fda7c84 /drivers/char/tpm/Kconfig | |
| parent | 4c336e4b1556f4b722ba597bc6e3df786968a600 (diff) | |
| download | linux-a2871c62e1865c45f87a9343de76f727fb7a0ffd.tar.xz | |
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/Kconfig | 9 |
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 |