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mfd: rtsx: Add func to split u32 into register 

Add helper function to write u32 to registers, if we want to put u32
value to 4 continuous register, this can help us reduce tedious work.

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Micky Ching 2014-12-05 13:54:26 +08:00 committed by Lee Jones
parent 292aabb1da
commit a3b63979f8
1 changed files with 9 additions and 0 deletions
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9
include/linux/mfd/rtsx_pci.h
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@ -558,6 +558,7 @@
#define SD_SAMPLE_POINT_CTL 0xFDA7
#define SD_PUSH_POINT_CTL 0xFDA8
#define SD_CMD0 0xFDA9
#define SD_CMD_START 0x40
#define SD_CMD1 0xFDAA
#define SD_CMD2 0xFDAB
#define SD_CMD3 0xFDAC
@ -995,4 +996,12 @@ static inline int rtsx_pci_update_cfg_byte(struct rtsx_pcr *pcr, int addr,
return pci_write_config_byte(pcr->pci, addr, (val & mask) | append);
}
static inline void rtsx_pci_write_be32(struct rtsx_pcr *pcr, u16 reg, u32 val)
{
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg, 0xFF, val >> 24);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 1, 0xFF, val >> 16);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 2, 0xFF, val >> 8);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 3, 0xFF, val);
}
#endif