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ARM: 6239/1: mmci: let core poll for card detection 

Use the MMC core's ability to poll for card detection.  This also has
the advantage of doing the gpio_get_value from a workqueue instead of
timer, allowing the gpio to be on a sleeping gpiochip.

Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Rabin Vincent 2010-07-21 12:50:31 +01:00 committed by Russell King
parent 528320db01
commit f5e2574e73
1 changed files with 1 additions and 21 deletions
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22
drivers/mmc/host/mmci.c
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@ -567,18 +567,6 @@ static const struct mmc_host_ops mmci_ops = {
.get_cd = mmci_get_cd,
};
static void mmci_check_status(unsigned long data)
{
struct mmci_host *host = (struct mmci_host *)data;
unsigned int status = mmci_get_cd(host->mmc);
if (status ^ host->oldstat)
mmc_detect_change(host->mmc, 0);
host->oldstat = status;
mod_timer(&host->timer, jiffies + HZ);
}
static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
{
struct mmci_platform_data *plat = dev->dev.platform_data;
@ -685,6 +673,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
if (host->vcc == NULL)
mmc->ocr_avail = plat->ocr_mask;
mmc->caps = plat->capabilities;
mmc->caps |= MMC_CAP_NEEDS_POLL;
/*
* We can do SGIO
@ -750,7 +739,6 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
amba_set_drvdata(dev, mmc);
host->oldstat = mmci_get_cd(host->mmc);
mmc_add_host(mmc);
@ -758,12 +746,6 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
mmc_hostname(mmc), amba_rev(dev), amba_config(dev),
(unsigned long long)dev->res.start, dev->irq[0], dev->irq[1]);
init_timer(&host->timer);
host->timer.data = (unsigned long)host;
host->timer.function = mmci_check_status;
host->timer.expires = jiffies + HZ;
add_timer(&host->timer);
return 0;
irq0_free:
@ -797,8 +779,6 @@ static int __devexit mmci_remove(struct amba_device *dev)
if (mmc) {
struct mmci_host *host = mmc_priv(mmc);
del_timer_sync(&host->timer);
mmc_remove_host(mmc);
writel(0, host->base + MMCIMASK0);