[PATCH/RFC 17/17] rtw89: Use bitfield helpers
From: Geert Uytterhoeven <geert+renesas@glider.be>
Date: 2021-11-22 15:55:16
Also in:
alsa-devel, linux-aspeed, linux-clk, linux-gpio, linux-iio, linux-media, linux-mmc, linux-omap, linux-renesas-soc, linux-wireless, lkml, netdev
Subsystem:
realtek wireless driver (rtw89), the rest · Maintainers:
Ping-Ke Shih, Linus Torvalds
Use the field_{get,prep}() helpers, instead of open-coding the same
operations.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Compile-tested only.
Marked RFC, as this depends on [PATCH 01/17], but follows a different
path to upstream.
---
drivers/net/wireless/realtek/rtw89/core.h | 38 ++++-------------------
1 file changed, 6 insertions(+), 32 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index c2885e4dd882f045..f9c0300ec373aaf2 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h@@ -2994,81 +2994,55 @@ rtw89_write32_clr(struct rtw89_dev *rtwdev, u32 addr, u32 bit) static inline u32 rtw89_read32_mask(struct rtw89_dev *rtwdev, u32 addr, u32 mask) { - u32 shift = __ffs(mask); - u32 orig; - u32 ret; - - orig = rtw89_read32(rtwdev, addr); - ret = (orig & mask) >> shift; - - return ret; + return field_get(mask, rtw89_read32(rtwdev, addr)); } static inline u16 rtw89_read16_mask(struct rtw89_dev *rtwdev, u32 addr, u32 mask) { - u32 shift = __ffs(mask); - u32 orig; - u32 ret; - - orig = rtw89_read16(rtwdev, addr); - ret = (orig & mask) >> shift; - - return ret; + return field_get(mask, rtw89_read16(rtwdev, addr)); } static inline u8 rtw89_read8_mask(struct rtw89_dev *rtwdev, u32 addr, u32 mask) { - u32 shift = __ffs(mask); - u32 orig; - u32 ret; - - orig = rtw89_read8(rtwdev, addr); - ret = (orig & mask) >> shift; - - return ret; + return field_get(mask, rtw89_read8(rtwdev, addr)); } static inline void rtw89_write32_mask(struct rtw89_dev *rtwdev, u32 addr, u32 mask, u32 data) { - u32 shift = __ffs(mask); u32 orig; u32 set; WARN(addr & 0x3, "should be 4-byte aligned, addr = 0x%08x\n", addr); orig = rtw89_read32(rtwdev, addr); - set = (orig & ~mask) | ((data << shift) & mask); + set = (orig & ~mask) | field_prep(mask, data); rtw89_write32(rtwdev, addr, set); } static inline void rtw89_write16_mask(struct rtw89_dev *rtwdev, u32 addr, u32 mask, u16 data) { - u32 shift; u16 orig, set; mask &= 0xffff; - shift = __ffs(mask); orig = rtw89_read16(rtwdev, addr); - set = (orig & ~mask) | ((data << shift) & mask); + set = (orig & ~mask) | field_prep(mask, data); rtw89_write16(rtwdev, addr, set); } static inline void rtw89_write8_mask(struct rtw89_dev *rtwdev, u32 addr, u32 mask, u8 data) { - u32 shift; u8 orig, set; mask &= 0xff; - shift = __ffs(mask); orig = rtw89_read8(rtwdev, addr); - set = (orig & ~mask) | ((data << shift) & mask); + set = (orig & ~mask) | field_prep(mask, data); rtw89_write8(rtwdev, addr, set); }
--
2.25.1