Hi Jarkko,
This serie is including common work from Infineon (Peter Huewe & Alexander
Steffen) and ST.
We propose a common low level API used by a core TIS interface allowing to share
some protocols behavior between physical layers (lpc, spi, i2c...) or drivers.
To easy the group review, i only send 10 patches showing how we rework the
tpm_tis driver
keeping existing proprietary logic (itpm workaround, irq for tpm_tis ("lpc")).
Finally we are adding spi support based on TCG PTP specification. This
additional driver
support the SPI bit protocol including optional flow control.
Reworked tpm_tis got validated on a HP 8200 machine with an Infineon TPM
tpm_tis_spi got validated using Minnowboard Max as well as Raspberry Pi.
v2:
- Add Rob Herring acks on devicetree specific patch
- Renamed priv_data tpm_tis_data
- Moved data_expect_val & data_expect_mask in tpm_tis_data
- Moved "hal" (e.g: tpm_write_xxx/tpm_read_xxx) in tpm_tis_core.h
- Reduced list of the exported functions from tpm_tis_core
- Make tpm_tis ops internal to tpm_tis_core
v3:
- Merge tpm_class_lowlevel and tpm_tis_phy_ops
- Changed the way phy specific structure looked like in order to use
container_of
- Cleanup patches with rebase mistakes and build verify them...
- Moved "Add include guards in tpm.h" at first position
v4:
- Move patch "Use read/write_bytes for drivers without more specialized methods"
before spi phy patch and rework so that functions are no more inlined and
available
from tpm_tis_core.
v5:
- Squashed several patch together. (2, 3, 4).
- Renammed tpm_tis_lpc_data --> tpm_tis_tcg_data.
- Change tpm_tis_read_xxx/tpm_tis_write_xx parameters to take a struct
tpm_tis_data* instead of a struct tpm_chip*.
- Manage itpm workaround internally to the tpm_tis_core and add a TIS flag
(TPM_TIS_ITPM_POSSIBLE).
- Several fixes in the spi phy.
- Use chip->ops->cancel(chip) instead of tpm_tis_ready out of tpm_tis_core.
- Reworked Makefile
v6:
- Fix rebase mistaked in patch 2 and 3.
- Remove post_probe handler from tpm_tis_phy_ops in "Split tpm_tis driver into
a core and TCG TIS compliant phy"
v7:
- Merge patch 7 in patch 8 as requested by Jarkko.
You can check this work on:
https://github.com/cricard13/linux-tpmdd tpm_tis_core_v7
Christophe Ricard (7):
tpm: Add include guards in tpm.h
tpm: tpm_tis: Share common data between phys
tpm_tis: Introduce intermediate layer for TPM access
devicetree: Add infineon to vendor-prefix.txt
devicetree: Add Trusted Computing Group to vendor-prefix.txt
tpm/tpm_tis: Split tpm_tis driver into a core and TCG TIS compliant
phy
tpm/tpm_tis_spi: Add support for spi phy
.../bindings/security/tpm/tpm_tis_spi.txt | 24 +
.../devicetree/bindings/vendor-prefixes.txt | 2 +
drivers/char/tpm/Kconfig | 19 +
drivers/char/tpm/Makefile | 2 +
drivers/char/tpm/tpm.h | 5 +
drivers/char/tpm/tpm_tis.c | 851 ++------------------
drivers/char/tpm/tpm_tis_core.c | 860 +++++++++++++++++++++
drivers/char/tpm/tpm_tis_core.h | 153 ++++
drivers/char/tpm/tpm_tis_spi.c | 272 +++++++
9 files changed, 1400 insertions(+), 788 deletions(-)
create mode 100644
Documentation/devicetree/bindings/security/tpm/tpm_tis_spi.txt
create mode 100644 drivers/char/tpm/tpm_tis_core.c
create mode 100644 drivers/char/tpm/tpm_tis_core.h
create mode 100644 drivers/char/tpm/tpm_tis_spi.c
--
2.1.4
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