From a3b63979f8a32af9e975a793fd0f612d42072740 Mon Sep 17 00:00:00 2001 From: Micky Ching Date: Fri, 5 Dec 2014 13:54:26 +0800 Subject: [PATCH] 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 Signed-off-by: Lee Jones --- include/linux/mfd/rtsx_pci.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 1604dda4edcf..0c12628e91c6 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -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