On Thu, Jun 04, 2020 at 04:47:06PM +0300, [email protected] wrote: > From: Amir Mizinski <[email protected]> > > Only tpm_tis can use memory-mapped I/O, which is truly mapped into > the kernel's memory space. Therefore, using ioread16/ioread32/iowrite32 > turns into a straightforward pointer dereference. > Every other driver requires more complicated operations to read more than > one byte at a time and will just fall back to read_bytes/write_bytes. > Therefore, move this common code out of tpm_tis_spi and into tpm_tis_core > so that it is used automatically when low-level drivers do not implement > the specialized methods. > > Co-developed-by: Alexander Steffen <[email protected]> > Signed-off-by: Alexander Steffen <[email protected]> > Signed-off-by: Amir Mizinski <[email protected]>
Reviewed-by: Jarkko Sakkinen <[email protected]> Tested-by: Jarkko Sakkinen <[email protected]> I tested this with my T480 ThinkPad, which has Infineon SLB 9670 TPM chip according to TPM_PT_VENDOR_STRING_* [*] [*] tpm2_getcap properties-fixed from tpm2-tools package to fetch this information. /Jarkko
