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mmc: fsl_esdhc: read register once for card inserted status

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No need to poll register for card inserted status.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Yangbo Lu 2020-05-19 11:06:43 +08:00 committed by Peng Fan
parent 9d886fd6a0
commit 9abf648436
1 changed files with 4 additions and 5 deletions
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9
drivers/mmc/fsl_esdhc.c
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@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2007, 2010-2011 Freescale Semiconductor, Inc
* Copyright 2019 NXP Semiconductors
* Copyright 2019-2020 NXP
* Andy Fleming
*
* Based vaguely on the pxa mmc code:
@ -630,16 +630,15 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
{
struct fsl_esdhc *regs = priv->esdhc_regs;
int timeout = 1000;
#ifdef CONFIG_ESDHC_DETECT_QUIRK
if (CONFIG_ESDHC_DETECT_QUIRK)
return 1;
#endif
while (!(esdhc_read32(&regs->prsstat) & PRSSTAT_CINS) && --timeout)
udelay(1000);
if (esdhc_read32(&regs->prsstat) & PRSSTAT_CINS)
return 1;
return timeout > 0;
return 0;
}
static void fsl_esdhc_get_cfg_common(struct fsl_esdhc_priv *priv,