[PATCH 6/7] mmc: at91_mci: Enable MMC_CAP_SDIO_IRQ only when it actually works.
From: Nicolas Ferre <hidden>
Date: 2010-02-26 17:38:10
Also in:
linux-mmc, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, the rest · Maintainers:
Ulf Hansson, Linus Torvalds
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 <redacted> --- drivers/mmc/host/at91_mci.c | 9 ++++++++- 1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index 4c30c56..e78cdc8 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)
--
1.5.6.5