From 541e7ef0399c6c5753cc8d3e8f371dcb3627e8a4 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Fri, 5 Mar 2010 13:43:43 -0800 Subject: mmc: at91_mci: Enable MMC_CAP_SDIO_IRQ only when it actually works. According to the datasheets AT91SAM9261 does not support SDIO interrupts, and AT91SAM9260/9263 have an erratum requiring 4bit mode while using slot B for the interrupt to work. Signed-off-by: Nicolas Ferre Cc: Wolfgang Muees Cc: Andrew Victor Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/mmc/host/at91_mci.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers/mmc/host/at91_mci.c') diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c index 3cd00c6f2584..8327daebb396 100644 --- a/drivers/mmc/host/at91_mci.c +++ b/drivers/mmc/host/at91_mci.c @@ -929,7 +929,7 @@ static int __init at91_mci_probe(struct platform_device *pdev) mmc->f_min = 375000; mmc->f_max = 25000000; mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; - mmc->caps = MMC_CAP_SDIO_IRQ; + mmc->caps = 0; mmc->max_blk_size = MCI_MAXBLKSIZE; mmc->max_blk_count = MCI_BLKATONCE; @@ -958,6 +958,13 @@ static int __init at91_mci_probe(struct platform_device *pdev) goto fail5; } + /* Add SDIO capability when available */ + if (cpu_is_at91sam9260() || cpu_is_at91sam9263()) { + /* AT91SAM9260/9263 erratum */ + if (host->board->wire4 || !host->board->slot_b) + mmc->caps |= MMC_CAP_SDIO_IRQ; + } + /* * Reserve GPIOs ... board init code makes sure these pins are set * up as GPIOs with the right direction (input, except for vcc) -- cgit v1.2.2