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tmio: add a platform flag to disable card write-protection detection

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Write-protection status is not always available, e.g., micro-SD cards do not
have a write-protection switch at all. This patch adds a flag to let platforms
force tmio_mmc to consider the card writable.

Signed-off-by: Guennadi Liakhovetski <[email protected]>
Acked-by: Ian Molton <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
This commit is contained in:
Guennadi Liakhovetski 2010-05-19 18:36:02 +00:00 • committed by Paul Mundt
commit ac8fb3e862
2 changed files with 8 additions and 1 deletions
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5
drivers/mmc/host/tmio_mmc.c
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@ -748,8 +748,11 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
static int tmio_mmc_get_ro(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;
return (sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT) ? 0 : 1;
return ((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) ||
(sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)) ? 0 : 1;
}
static const struct mmc_host_ops tmio_mmc_ops = {