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Date: Wed, 20 Nov 2013 17:54:53 +0800 From: <micky_ching@...lsil.com.cn> To: <devel@...uxdriverproject.org>, <linux-kernel@...r.kernel.org> CC: <sameo@...ux.intel.com>, <maximlevitsky@...il.com>, <gregkh@...uxfoundation.org>, <oakad@...oo.com>, <rogerable@...ltek.com>, <wei_wang@...lsil.com.cn>, Micky Ching <micky_ching@...lsil.com.cn> Subject: [PATCH v2] memstick: rtsx: fix ms card data transfer bug From: Micky Ching <micky_ching@...lsil.com.cn> 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 <micky_ching@...lsil.com.cn> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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