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mmc: host: tmio: Use GPIO descriptors

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The TMIO MMC driver was passing global GPIO numbers around for
card detect. It turns out only one single board in the kernel
was actually making use of this feature so it is pretty easy
to convert the driver to use only GPIO descriptors.

The lines are flagged as GPIO_ACTIVE_[LOW|HIGH] as that is
what they are, and since we can now rely on the descriptors
to have the right polarity, we set the
"override_active_level" to false in mmc_gpiod_request_cd()
and mmc_gpiod_request_ro().

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Linus Walleij
2018-12-02 09:43:19 +01:00
committed by Ulf Hansson
parent 5716fb9bd9
commit faed930306
3 changed files with 31 additions and 16 deletions
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12
drivers/mmc/host/tmio_mmc_core.c
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@@ -1168,11 +1168,13 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
if (ret < 0)
return ret;
if (pdata->flags & TMIO_MMC_USE_GPIO_CD) {
ret = mmc_gpio_request_cd(mmc, pdata->cd_gpio, 0);
if (ret)
return ret;
}
/*
* Look for a card detect GPIO, if it fails with anything
* else than a probe deferral, just live without it.
*/
ret = mmc_gpiod_request_cd(mmc, "cd", 0, false, 0, NULL);
if (ret == -EPROBE_DEFER)
return ret;
mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities;
mmc->caps2 |= pdata->capabilities2;