From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753715Ab3KGDRf (ORCPT ); Wed, 6 Nov 2013 22:17:35 -0500 Received: from rtits2.realtek.com ([60.250.210.242]:55300 "EHLO rtits2.realtek.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752833Ab3KGDRc (ORCPT ); Wed, 6 Nov 2013 22:17:32 -0500 X-SpamFilter-By: BOX Solutions SpamTrap 5.37 with qID rA73GiYi019235, This message is accepted by code: ctloc85258 From: To: , CC: , , , , , , Micky Ching Subject: [PATCH] memstick: rtsx: fix ms card data transfer bug Date: Thu, 7 Nov 2013 11:18:23 +0800 Message-ID: <1383794303-9447-1-git-send-email-micky_ching@realsil.com.cn> X-Mailer: git-send-email 1.7.9.5 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 This patch is used to add support for ms card. The main difference between ms card and mspro card is long data transfer mode. mspro card can use auto mode DMA for long data transfer, but ms can not use this mode, it should use normal mode DMA. The memstick core add support for ms card, but the original driver will make ms card fail at initialize, because it use auto mode DMA. This patch can make ms card work properly. Signed-off-by: Micky Ching --- drivers/memstick/host/rtsx_pci_ms.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/drivers/memstick/host/rtsx_pci_ms.c b/drivers/memstick/host/rtsx_pci_ms.c index 25f8f93..2a635b6 100644 --- a/drivers/memstick/host/rtsx_pci_ms.c +++ b/drivers/memstick/host/rtsx_pci_ms.c @@ -145,6 +145,8 @@ static int ms_transfer_data(struct realtek_pci_ms *host, unsigned char data_dir, unsigned int length = sg->length; u16 sec_cnt = (u16)(length / 512); u8 val, trans_mode, dma_dir; + struct memstick_dev *card = host->msh->card; + bool pro_card = card->id.type == MEMSTICK_TYPE_PRO; dev_dbg(ms_dev(host), "%s: tpc = 0x%02x, data_dir = %s, length = %d\n", __func__, tpc, (data_dir == READ) ? "READ" : "WRITE", @@ -152,19 +154,21 @@ static int ms_transfer_data(struct realtek_pci_ms *host, unsigned char data_dir, if (data_dir == READ) { dma_dir = DMA_DIR_FROM_CARD; - trans_mode = MS_TM_AUTO_READ; + trans_mode = pro_card ? MS_TM_AUTO_READ : MS_TM_NORMAL_READ; } else { dma_dir = DMA_DIR_TO_CARD; - trans_mode = MS_TM_AUTO_WRITE; + trans_mode = pro_card ? MS_TM_AUTO_WRITE : MS_TM_NORMAL_WRITE; } rtsx_pci_init_cmd(pcr); rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_H, - 0xFF, (u8)(sec_cnt >> 8)); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_L, - 0xFF, (u8)sec_cnt); + if (pro_card) { + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_H, + 0xFF, (u8)(sec_cnt >> 8)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_L, + 0xFF, (u8)sec_cnt); + } rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0, @@ -192,8 +196,14 @@ static int ms_transfer_data(struct realtek_pci_ms *host, unsigned char data_dir, } rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val); - if (val & (MS_INT_CMDNK | MS_INT_ERR | MS_CRC16_ERR | MS_RDY_TIMEOUT)) - return -EIO; + if (pro_card) { + if (val & (MS_INT_CMDNK | MS_INT_ERR | + MS_CRC16_ERR | MS_RDY_TIMEOUT)) + return -EIO; + } else { + if (val & (MS_CRC16_ERR | MS_RDY_TIMEOUT)) + return -EIO; + } return 0; } @@ -462,8 +472,8 @@ static int rtsx_pci_ms_set_param(struct memstick_host *msh, clock = 19000000; ssc_depth = RTSX_SSC_DEPTH_500K; - err = rtsx_pci_write_register(pcr, MS_CFG, - 0x18, MS_BUS_WIDTH_1); + err = rtsx_pci_write_register(pcr, MS_CFG, 0x58, + MS_BUS_WIDTH_1 | PUSH_TIME_DEFAULT); if (err < 0) return err; } else if (value == MEMSTICK_PAR4) { -- 1.7.9.5