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mmc: Allow the tmio_mmc mfd driver to specify get_cd handler

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Some controllers, supported by the tmio_mmc driver do not have the card
detect pin of a slot connected, so that polling needs to be used and
card detection is handled by other means.
This patch exposes a get_cd hook for that purpose.

Signed-off-by: Arnd Hannemann <arnd@arndnet.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Arnd Hannemann 2010-08-24 17:26:59 +02:00 committed by Samuel Ortiz
parent 9b16c0a43b
commit 19ca7502c5
2 changed files with 14 additions and 0 deletions
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13
drivers/mmc/host/tmio_mmc.c
View File

@ -756,10 +756,23 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc)
(sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)) ? 0 : 1;
}
static int tmio_mmc_get_cd(struct mmc_host *mmc)
{
struct tmio_mmc_host *host = mmc_priv(mmc);
struct mfd_cell *cell = host->pdev->dev.platform_data;
struct tmio_mmc_data *pdata = cell->driver_data;
if (!pdata->get_cd)
return -ENOSYS;
else
return pdata->get_cd(host->pdev);
}
static const struct mmc_host_ops tmio_mmc_ops = {
.request = tmio_mmc_request,
.set_ios = tmio_mmc_set_ios,
.get_ro = tmio_mmc_get_ro,
.get_cd = tmio_mmc_get_cd,
};
#ifdef CONFIG_PM

1
include/linux/mfd/tmio.h
View File

@ -74,6 +74,7 @@ struct tmio_mmc_data {
struct tmio_mmc_dma *dma;
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);
int (*get_cd)(struct platform_device *host);
};
/*