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Author	SHA1	Message	Date
Uwe Kleine-König	7b69ef6203	tpm/tpm_tis_synquacer: Convert to platform remove callback returning void The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>	2023-04-24 16:15:53 +03:00
Johannes Holland	6422cbd3c5	tpm: Remove read16/read32/write32 calls from tpm_tis_phy_ops Only tpm_tis and tpm_tis_synquacer have a dedicated way to access multiple bytes at once, every other driver will just fall back to read_bytes/write_bytes. Therefore, remove the read16/read32/write32 calls and move their logic to read_bytes/write_bytes. Suggested-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Johannes Holland <johannes.holland@infineon.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>	2022-05-23 18:47:49 +03:00
Masahisa Kojima	d5ae56a4fe	tpm: tis: add support for MMIO TPM on SynQuacer When fitted, the SynQuacer platform exposes its SPI TPM via a MMIO window that is backed by the SPI command sequencer in the SPI bus controller. This arrangement has the limitation that only byte size accesses are supported, and so we'll need to provide a separate module that take this into account. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>	2020-10-02 00:21:02 +03:00

Author

SHA1

Message

Date

Uwe Kleine-König

7b69ef6203

tpm/tpm_tis_synquacer: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>

2023-04-24 16:15:53 +03:00

Johannes Holland

6422cbd3c5

tpm: Remove read16/read32/write32 calls from tpm_tis_phy_ops

Only tpm_tis and tpm_tis_synquacer have a dedicated way to access
multiple bytes at once, every other driver will just fall back to
read_bytes/write_bytes. Therefore, remove the read16/read32/write32
calls and move their logic to read_bytes/write_bytes.

Suggested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Johannes Holland <johannes.holland@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>

2022-05-23 18:47:49 +03:00

Masahisa Kojima

d5ae56a4fe

tpm: tis: add support for MMIO TPM on SynQuacer

When fitted, the SynQuacer platform exposes its SPI TPM via a MMIO
window that is backed by the SPI command sequencer in the SPI bus
controller. This arrangement has the limitation that only byte size
accesses are supported, and so we'll need to provide a separate module
that take this into account.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

2020-10-02 00:21:02 +03:00

3 Commits