From 757df746fc5db0020ddab45914617a19d149c252 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 30 Jun 2011 15:10:21 +0100 Subject: ARM: 6980/1: mmci: use StartBitErr to detect bad connections Stresstesting insert/remove of SD-cards can trigger a StartBitErr. This made the driver to hang in forever waiting for a non ocurring data timeout. This bit and interrupt is documented in the original PL180 TRM, just never implemented until now. Signed-off-by: Ulf Hansson Reviewed-by: Linus Walleij Reviewed-by: Jonas Aberg Signed-off-by: Linus Walleij Signed-off-by: Russell King --- drivers/mmc/host/mmci.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/mmc/host/mmci.h') diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index bb32e21c09db..2164e8c6476c 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -86,6 +86,7 @@ #define MCI_CMDRESPEND (1 << 6) #define MCI_CMDSENT (1 << 7) #define MCI_DATAEND (1 << 8) +#define MCI_STARTBITERR (1 << 9) #define MCI_DATABLOCKEND (1 << 10) #define MCI_CMDACTIVE (1 << 11) #define MCI_TXACTIVE (1 << 12) @@ -112,6 +113,7 @@ #define MCI_CMDRESPENDCLR (1 << 6) #define MCI_CMDSENTCLR (1 << 7) #define MCI_DATAENDCLR (1 << 8) +#define MCI_STARTBITERRCLR (1 << 9) #define MCI_DATABLOCKENDCLR (1 << 10) /* Extended status bits for the ST Micro variants */ #define MCI_ST_SDIOITC (1 << 22) @@ -127,6 +129,7 @@ #define MCI_CMDRESPENDMASK (1 << 6) #define MCI_CMDSENTMASK (1 << 7) #define MCI_DATAENDMASK (1 << 8) +#define MCI_STARTBITERRMASK (1 << 9) #define MCI_DATABLOCKENDMASK (1 << 10) #define MCI_CMDACTIVEMASK (1 << 11) #define MCI_TXACTIVEMASK (1 << 12) @@ -150,7 +153,7 @@ #define MCI_IRQENABLE \ (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \ MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \ - MCI_CMDRESPENDMASK|MCI_CMDSENTMASK) + MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_STARTBITERRMASK) /* These interrupts are directed to IRQ1 when two IRQ lines are available */ #define MCI_IRQ1MASK \ -- cgit v1.2.3