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mmc: slot-gpio: Add debouncing capability to mmc_gpio_request_cd()

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Add a debounce parameter to the mmc_gpio_request_cd() function that
enables GPIO debouncing when set to a non-zero value. This can be used
by MMC host drivers to enable debouncing on the card detect signal.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Laurent Pinchart
2013-08-08 12:38:31 +02:00
committed by Chris Ball
parent 7725a52c03
commit 214fc309d1
10 changed files with 25 additions and 10 deletions
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2
drivers/mmc/host/sdhci-esdhc-imx.c
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@@ -616,7 +616,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
/* card_detect */
switch (boarddata->cd_type) {
case ESDHC_CD_GPIO:
err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio);
err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio, 0);
if (err) {
dev_err(mmc_dev(host->mmc),
"failed to request card-detect gpio!\n");