From: <micky_ching@realsil.com.cn>
To: sameo@linux.intel.com, lee.jones@linaro.org, chris@printf.net,
ulf.hansson@linaro.org
Cc: gregkh@linuxfoundation.org, linux-mmc@vger.kernel.org,
linux-kernel@vger.kernel.org, wei_wang@realsil.com.cn,
rogerable@realtek.com, devel@linuxdriverproject.org,
dan.carpenter@oracle.com
Subject: [PATCH v2 1/2] mfd: rtsx: add func to split u32 into register
Date: Fri, 28 Nov 2014 14:31:55 +0800 [thread overview]
Message-ID: <6a6de978f479758fb9e767d8a6e013e8a006a39a.1417141102.git.micky_ching@realsil.com.cn> (raw)
In-Reply-To: <cover.1417141102.git.micky_ching@realsil.com.cn>
From: Micky Ching <micky_ching@realsil.com.cn>
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>
---
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 74346d5..9234449 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
@@ -967,4 +968,12 @@ static inline u8 *rtsx_pci_get_cmd_data(struct rtsx_pcr *pcr)
return (u8 *)(pcr->host_cmds_ptr);
}
+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
--
1.9.1
next prev parent reply other threads:[~2014-11-28 6:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-28 6:31 [PATCH v2 0/2] mmc: rtsx: add support for sdio card micky_ching
2014-11-28 6:31 ` micky_ching [this message]
2014-12-01 12:18 ` [PATCH v2 1/2] mfd: rtsx: add func to split u32 into register Lee Jones
2014-12-01 12:37 ` Dan Carpenter
2014-12-01 12:46 ` Lee Jones
2014-11-28 6:31 ` [PATCH v2 2/2] mmc: rtsx: add support for sdio card micky_ching
2014-12-01 12:37 ` Dan Carpenter
2014-12-02 1:36 [PATCH v2 0/2] " micky_ching
2014-12-02 1:36 ` [PATCH v2 1/2] mfd: rtsx: add func to split u32 into register micky_ching
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