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path: root/drivers/crypto/hisilicon/trng
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2024-09-06crypto: hisilicon/trng - modifying the order of header filesChenghai Huang1-2/+2
Header files is included Order-ref: standard library headers, OS library headers, and project-specific headers. This patch modifies the order of header files according to suggestions. In addition, use %u to print unsigned int variables to prevent overflow. Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-10-27crypto: hisilicon/trng - Convert to platform remove callback returning voidUwe Kleine-König1-4/+2
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 ignored (apart from emitting a warning) 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. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). 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: Weili Qian <qianweili@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-05-12hwrng: histb - Move driver to drivers/char/hw_random/histb-rng.cDavid Yang2-179/+0
Move to drivers/char/hw_random since histb-(t)rng does not provide cryptography pseudo rng. histb-rng is pretty like hisi-rng, but after investigation, we confirm there is no RNG_PHY_SEED register on histb-rng so a separate driver is needed. Still we rename relevant function names to match those in hisi-rng. Link: https://lore.kernel.org/r/20230401164448.1393336-1-mmyangfl@gmail.com Signed-off-by: David Yang <mmyangfl@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-04-06crypto: hisilicon/trng - add support for HiSTB TRNGDavid Yang2-0/+179
HiSTB TRNG are found on some HiSilicon STB SoCs. Signed-off-by: David Yang <mmyangfl@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-06-17crypto: hisilicon/trng - fix local variable typeWeili Qian1-1/+1
The return value of 'readl_poll_timeout' is '0' or '-ETIMEDOUT'. Therefore, change the local variable 'ret' type from 'u32' to 'int'. Signed-off-by: Weili Qian <qianweili@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-04-16crypto: hisilicon/trng - add version to adapt new algorithmWeili Qian1-3/+10
Kunpeng930 supports trng and prng, but Kunpeng920 only supports trng. Therefore, version information is added to ensure that prng is not registered to Crypto subsystem on Kunpeng920. Signed-off-by: Weili Qian <qianweili@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-12-11crypto: hisilicon/trng - replace atomic_add_return()Yejune Deng1-4/+4
a set of atomic_inc_return() looks more neater Signed-off-by: Yejune Deng <yejune.deng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-11-27crypto: hisilicon/trng - add support for PRNGWeili Qian1-3/+238
This patch adds support for pseudo random number generator(PRNG) in Crypto subsystem. Signed-off-by: Weili Qian <qianweili@huawei.com> Reviewed-by: Zaibo Xu <xuzaibo@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-11-27crypto: hisilicon/trng - add HiSilicon TRNG driver supportWeili Qian2-0/+101
Move existing char/hw_random/hisi-trng-v2.c to crypto/hisilicon/trng.c. Signed-off-by: Weili Qian <qianweili@huawei.com> Reviewed-by: Zaibo Xu <xuzaibo@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>