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mmc: sdhci: implement the .card_event() method 

Extracting a part of the SDHCI card tasklet into a .card_event()
implementation allows SDHCI hosts to use generic card-detection
services, e.g. the GPIO slot function.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Guennadi Liakhovetski 2012-12-04 16:51:40 +01:00 committed by Chris Ball
parent 451c89578e
commit 71e69211ea
1 changed files with 27 additions and 21 deletions
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48
drivers/mmc/host/sdhci.c
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@ -1994,30 +1994,11 @@ static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable)
sdhci_runtime_pm_put(host);
}
static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.set_ios = sdhci_set_ios,
.get_ro = sdhci_get_ro,
.hw_reset = sdhci_hw_reset,
.enable_sdio_irq = sdhci_enable_sdio_irq,
.start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
.execute_tuning = sdhci_execute_tuning,
.enable_preset_value = sdhci_enable_preset_value,
};
/*****************************************************************************\
* *
* Tasklets *
* *
\*****************************************************************************/
static void sdhci_tasklet_card(unsigned long param)
static void sdhci_card_event(struct mmc_host *mmc)
{
struct sdhci_host *host;
struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
host = (struct sdhci_host*)param;
spin_lock_irqsave(&host->lock, flags);
/* Check host->mrq first in case we are runtime suspended */
@ -2036,6 +2017,31 @@ static void sdhci_tasklet_card(unsigned long param)
}
spin_unlock_irqrestore(&host->lock, flags);
}
static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.set_ios = sdhci_set_ios,
.get_ro = sdhci_get_ro,
.hw_reset = sdhci_hw_reset,
.enable_sdio_irq = sdhci_enable_sdio_irq,
.start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
.execute_tuning = sdhci_execute_tuning,
.enable_preset_value = sdhci_enable_preset_value,
.card_event = sdhci_card_event,
};
/*****************************************************************************\
* *
* Tasklets *
* *
\*****************************************************************************/
static void sdhci_tasklet_card(unsigned long param)
{
struct sdhci_host *host = (struct sdhci_host*)param;
sdhci_card_event(host->mmc);
mmc_detect_change(host->mmc, msecs_to_jiffies(200));
}