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charset="utf-8" Add mmc_host_ops hook avoid_reprogram_allkeys to control reprogramming keys to Inline Crypto Engine by vendor as some vendors might not require this feature. Signed-off-by: Seshu Madhavi Puppala Co-developed-by: Ram Prakash Gupta Signed-off-by: Ram Prakash Gupta --- drivers/mmc/core/crypto.c | 8 +++++--- drivers/mmc/host/sdhci.c | 6 ++++++ include/linux/mmc/host.h | 7 +++++++ 3 files changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/core/crypto.c b/drivers/mmc/core/crypto.c index fec4fbf16a5b..4168f7d135ff 100644 --- a/drivers/mmc/core/crypto.c +++ b/drivers/mmc/core/crypto.c @@ -14,9 +14,11 @@ =20 void mmc_crypto_set_initial_state(struct mmc_host *host) { - /* Reset might clear all keys, so reprogram all the keys. */ - if (host->caps2 & MMC_CAP2_CRYPTO) - blk_crypto_reprogram_all_keys(&host->crypto_profile); + if (host->ops->avoid_reprogram_allkeys && !host->ops->avoid_reprogram_all= keys()) { + /* Reset might clear all keys, so reprogram all the keys. */ + if (host->caps2 & MMC_CAP2_CRYPTO) + blk_crypto_reprogram_all_keys(&host->crypto_profile); + } } =20 void mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index fbf7a91bed35..cd663899c025 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2704,6 +2704,11 @@ int sdhci_start_signal_voltage_switch(struct mmc_hos= t *mmc, } EXPORT_SYMBOL_GPL(sdhci_start_signal_voltage_switch); =20 +static bool sdhci_avoid_reprogram_allkeys(void) +{ + return false; +} + static int sdhci_card_busy(struct mmc_host *mmc) { struct sdhci_host *host =3D mmc_priv(mmc); @@ -3066,6 +3071,7 @@ static const struct mmc_host_ops sdhci_ops =3D { .execute_tuning =3D sdhci_execute_tuning, .card_event =3D sdhci_card_event, .card_busy =3D sdhci_card_busy, + .avoid_reprogram_allkeys =3D sdhci_avoid_reprogram_allkeys, }; =20 /*************************************************************************= ****\ diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 88c6a76042ee..c4109d17f177 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -218,6 +218,13 @@ struct mmc_host_ops { =20 /* Initialize an SD express card, mandatory for MMC_CAP2_SD_EXP. */ int (*init_sd_express)(struct mmc_host *host, struct mmc_ios *ios); + + /* + * Optional callback to support controllers that dont require to + * reprogram all crypto keys on card suspend/resume. + */ + bool (*avoid_reprogram_allkeys)(void); 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charset="utf-8" Implement Qualcomm hook to avoid reprogram of all keys to Inline Crypto Engine on runtime suspend resume of MMC since keys are not lost for QCOM socs. Signed-off-by: Seshu Madhavi Puppala Co-developed-by: Ram Prakash Gupta Signed-off-by: Ram Prakash Gupta --- drivers/mmc/host/sdhci-msm.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index e113b99a3eab..427e0126459a 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -1183,6 +1183,11 @@ static void sdhci_msm_set_cdr(struct sdhci_host *hos= t, bool enable) } } =20 +static bool sdhci_msm_avoid_reprogram_allkeys(void) +{ + return true; +} + static int sdhci_msm_execute_tuning(struct mmc_host *mmc, u32 opcode) { struct sdhci_host *host =3D mmc_priv(mmc); @@ -2641,6 +2646,7 @@ static int sdhci_msm_probe(struct platform_device *pd= ev) host->mmc_host_ops.start_signal_voltage_switch =3D sdhci_msm_start_signal_voltage_switch; host->mmc_host_ops.execute_tuning =3D sdhci_msm_execute_tuning; + host->mmc_host_ops.avoid_reprogram_allkeys =3D sdhci_msm_avoid_reprogram_= allkeys; if (of_property_read_bool(node, "supports-cqe")) ret =3D sdhci_msm_cqe_add_host(host, pdev); else --=20 2.17.1