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authorMicky Ching <micky_ching@realsil.com.cn>2014-01-23 15:56:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 16:37:04 -0800
commit63509beaf7ed7a9dc8c574be61189fce791489f0 (patch)
treea6cf3f6686bee216a0442f91257229026ae607b4 /drivers
parent949b9c3d4263c9b7c2448588afce37becd58e1ad (diff)
drivers/memstick/host/rtsx_pci_ms.c: fix ms card data transfer bug
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 added support for ms card, but the original driver will make ms card fail at initialization, because it uses auto mode DMA. This patch makes the ms card work properly. Signed-off-by: Micky Ching <micky_ching@realsil.com.cn> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alex Dubov <oakad@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/memstick/host/rtsx_pci_ms.c30
1 files changed, 20 insertions, 10 deletions
diff --git a/drivers/memstick/host/rtsx_pci_ms.c b/drivers/memstick/host/rtsx_pci_ms.c
index 25f8f93decb6..2a635b6fdaf7 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) {

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