We have found a couple of boards where the SDIO IRQ hardware support
has failed to work properly, and thus we should make it configurable
whether or not to be included in the driver.
Signed-off-by: Ben Dooks <b...@simtec.co.uk>
---
drivers/mmc/host/Kconfig | 7 +++++++
drivers/mmc/host/s3cmci.c | 9 +++++++--
2 files changed, 14 insertions(+), 2 deletions(-)
Index: b/drivers/mmc/host/s3cmci.c
===================================================================
--- a/drivers/mmc/host/s3cmci.c 2009-09-10 12:27:38.000000000 +0100
+++ b/drivers/mmc/host/s3cmci.c 2009-09-10 15:48:15.000000000 +0100
@@ -1715,7 +1715,11 @@ static int __devinit s3cmci_probe(struct
mmc->ops = &s3cmci_ops;
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+#ifdef CONFIG_MMC_S3C_HW_SDIO_IRQ
mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
+#else
+ mmc->caps = MMC_CAP_4_BIT_DATA;
+#endif
mmc->f_min = host->clk_rate / (host->clk_div * 256);
mmc->f_max = host->clk_rate / host->clk_div;
@@ -1750,8 +1754,9 @@ static int __devinit s3cmci_probe(struct
s3cmci_debugfs_attach(host);
platform_set_drvdata(pdev, mmc);
- dev_info(&pdev->dev, "%s - using %s\n", mmc_hostname(mmc),
- s3cmci_host_usedma(host) ? "dma" : "pio");
+ dev_info(&pdev->dev, "%s - using %s, %s SDIO IRQ\n", mmc_hostname(mmc),
+ s3cmci_host_usedma(host) ? "dma" : "pio",
+ mmc->caps & MMC_CAP_SDIO_IRQ ? "hw" : "sw");
return 0;
Index: b/drivers/mmc/host/Kconfig
===================================================================
--- a/drivers/mmc/host/Kconfig 2009-09-10 15:43:29.000000000 +0100
+++ b/drivers/mmc/host/Kconfig 2009-09-10 15:45:10.000000000 +0100
@@ -261,6 +261,13 @@ config MMC_S3C
If unsure, say N.
+config MMC_S3C_HW_SDIO_IRQ
+ bool "Hardware support for SDIO IRQ"
+ depends on MMC_S3C
+ help
+ Enable the hardware support for SDIO interrupts instead of using
+ the generic polling code.
+
choice
prompt "Samsung S3C SD/MMC transfer code"
depends on MMC_S3C
--
--
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