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>
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@ -558,6 +558,7 @@
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#define SD_SAMPLE_POINT_CTL 0xFDA7
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#define SD_PUSH_POINT_CTL 0xFDA8
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#define SD_CMD0 0xFDA9
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#define SD_CMD_START 0x40
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#define SD_CMD1 0xFDAA
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#define SD_CMD2 0xFDAB
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#define SD_CMD3 0xFDAC
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@ -995,4 +996,12 @@ static inline int rtsx_pci_update_cfg_byte(struct rtsx_pcr *pcr, int addr,
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return pci_write_config_byte(pcr->pci, addr, (val & mask) | append);
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}
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static inline void rtsx_pci_write_be32(struct rtsx_pcr *pcr, u16 reg, u32 val)
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{
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg, 0xFF, val >> 24);
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 1, 0xFF, val >> 16);
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 2, 0xFF, val >> 8);
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rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 3, 0xFF, val);
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}
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#endif
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