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charset="utf-8" Introduce `ufshcd_dme_rmw` API to read, modify, and write DME attributes in UFS host controllers using a mask and value. Signed-off-by: Nitin Rawat --- include/ufs/ufshcd.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 9b3515cee711..fe4bb248484c 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -1498,6 +1498,32 @@ static inline int ufshcd_vops_phy_initialization(str= uct ufs_hba *hba) return 0; } +/** + * ufshcd_dme_rmw - get modify set a dme attribute + * @hba - per adapter instance + * @mask - mask to apply on read value + * @val - actual value to write + * @attr - dme attribute + */ +static inline int ufshcd_dme_rmw(struct ufs_hba *hba, u32 mask, + u32 val, u32 attr) +{ + u32 cfg =3D 0; + int err =3D 0; + + err =3D ufshcd_dme_get(hba, UIC_ARG_MIB(attr), &cfg); + if (err) + goto out; + + cfg &=3D ~mask; + cfg |=3D (val & mask); + + err =3D ufshcd_dme_set(hba, UIC_ARG_MIB(attr), cfg); + +out: + return err; +} + extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[]; int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len, -- 2.48.1