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mmc: fsl_esdhc: make GPIO support optional

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There would be compiling error as below when enable driver model for esdhc.
undefined reference to `dm_gpio_get_value'
undefined reference to `gpio_request_by_name_nodev'
This patch is to make GPIO support optional with CONFIG_DM_GPIO. Because
all boards of QorIQ platform don't need it and they just check register for
CD/WP status, only some boards of i.MX platform require this.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Yangbo Lu 2016-12-07 11:54:30 +08:00 • committed by York Sun
parent 3564208e01
commit fc8048a88e
1 changed files with 8 additions and 2 deletions
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10
drivers/mmc/fsl_esdhc.c
View file

@ -104,8 +104,10 @@ struct fsl_esdhc_priv {
struct udevice *dev;
int non_removable;
int wp_enable;
#ifdef CONFIG_DM_GPIO
struct gpio_desc cd_gpio;
struct gpio_desc wp_gpio;
#endif
};
/* Return the XFERTYP flags for a given command and data packet */
@ -687,9 +689,10 @@ static int esdhc_getcd(struct mmc *mmc)
#ifdef CONFIG_DM_MMC
if (priv->non_removable)
return 1;
#ifdef CONFIG_DM_GPIO
if (dm_gpio_is_valid(&priv->cd_gpio))
return dm_gpio_get_value(&priv->cd_gpio);
#endif
#endif
while (!(esdhc_read32(&regs->prsstat) & PRSSTAT_CINS) && --timeout)
@ -967,17 +970,20 @@ static int fsl_esdhc_probe(struct udevice *dev)
priv->non_removable = 1;
} else {
priv->non_removable = 0;
#ifdef CONFIG_DM_GPIO
gpio_request_by_name_nodev(fdt, node, "cd-gpios", 0,
&priv->cd_gpio, GPIOD_IS_IN);
#endif
}
priv->wp_enable = 1;
#ifdef CONFIG_DM_GPIO
ret = gpio_request_by_name_nodev(fdt, node, "wp-gpios", 0,
&priv->wp_gpio, GPIOD_IS_IN);
if (ret)
priv->wp_enable = 0;
#endif
/*
* TODO:
* Because lack of clk driver, if SDHC clk is not enabled,