Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932822AbaLBBhX (ORCPT ); Mon, 1 Dec 2014 20:37:23 -0500 Received: from rtits2.realtek.com ([60.250.210.242]:41678 "EHLO rtits2.realtek.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932477AbaLBBhS (ORCPT ); Mon, 1 Dec 2014 20:37:18 -0500 Authenticated-By: X-SpamFilter-By: BOX Solutions SpamTrap 5.49 with qID sB21aqAp030863, This message is accepted by code: ctloc85258 From: To: , , , CC: , , , , , , , Micky Ching Subject: [PATCH v2 1/2] mfd: rtsx: add func to split u32 into register Date: Tue, 2 Dec 2014 09:36:44 +0800 Message-ID: <9c9bbcd8e2a72e2990488f2d0f77d3111ec637b1.1417484016.git.micky_ching@realsil.com.cn> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [172.29.41.103] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Micky Ching 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 Acked-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 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/