diff options
| author | Bhupesh Sharma <bhupesh.linux@gmail.com> | 2024-09-30 14:44:29 +0200 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2024-10-14 08:55:28 +0200 |
| commit | fdd33a7f140a2473277f9e365bc709f2cf425f0b (patch) | |
| tree | 3b04c71d66f689e3dd55ae4dfc1fd724e5bf715d | |
| parent | 03c6f9b6bfe7bab5710a33b56486fb9defe8ef50 (diff) | |
ufs/ufs.h: Add definition of 'ufshcd_rmwl()'
Add definition of 'ufshcd_rmwl()' helper function
which would be later used by Qualcomm UFS driver
to read-modify-write registers.
Ported from Linux kernel commits:
e785060ea3a1 ("ufs: definitions for phy interface")
cff91daf52d3 ("scsi: ufs: Fix kernel-doc syntax in ufshcd.h")
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Tested-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Tested-by: Julius Lehmann <lehmanju@devpi.de>
Link: https://lore.kernel.org/r/20240930-topic-ufs-enhancements-v3-7-58234f84ab89@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
| -rw-r--r-- | drivers/ufs/ufs.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/ufs/ufs.h b/drivers/ufs/ufs.h index b55c4a9e996..555f8a6857d 100644 --- a/drivers/ufs/ufs.h +++ b/drivers/ufs/ufs.h @@ -3,6 +3,7 @@ #define __UFS_H #include <linux/types.h> +#include <asm/io.h> #include "unipro.h" struct udevice; @@ -933,6 +934,23 @@ enum { #define ufshcd_readl(hba, reg) \ readl((hba)->mmio_base + (reg)) +/** + * ufshcd_rmwl - perform read/modify/write for a controller register + * @hba: per adapter instance + * @mask: mask to apply on read value + * @val: actual value to write + * @reg: register address + */ +static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg) +{ + u32 tmp; + + tmp = ufshcd_readl(hba, reg); + tmp &= ~mask; + tmp |= (val & mask); + ufshcd_writel(hba, tmp, reg); +} + /* UTRLRSR - UTP Transfer Request Run-Stop Register 60h */ #define UTP_TRANSFER_REQ_LIST_RUN_STOP_BIT 0x1 |