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mmc: sunxi: Fix misuse of gpio_direction_input()

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It does not make sense to make gpio_direction_input() return the gpio input
status. The return value of gpio_direction_input() is inconsistent if
CONFIG_DM_GPIO is defined.
And we don't need to call gpio_direction_input() int sunxi_mmc_getcd().
Just init the gpio once in mmc_resource_init() is enough.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Axel Lin 2014-12-20 11:41:25 +08:00 committed by Hans de Goede
parent 3f6242eb30
commit b0c4ae1a51
2 changed files with 6 additions and 3 deletions
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2
drivers/gpio/sunxi_gpio.c
View File

@ -75,7 +75,7 @@ int gpio_direction_input(unsigned gpio)
{
sunxi_gpio_set_cfgpin(gpio, SUNXI_GPIO_INPUT);
return sunxi_gpio_input(gpio);
return 0;
}
int gpio_direction_output(unsigned gpio, int value)

7
drivers/mmc/sunxi_mmc.c
View File

@ -72,8 +72,11 @@ static int mmc_resource_init(int sdc_no)
mmchost->mmc_no = sdc_no;
cd_pin = sunxi_mmc_getcd_gpio(sdc_no);
if (cd_pin != -1)
if (cd_pin != -1) {
ret = gpio_request(cd_pin, "mmc_cd");
if (!ret)
ret = gpio_direction_input(cd_pin);
}
return ret;
}
@ -414,7 +417,7 @@ static int sunxi_mmc_getcd(struct mmc *mmc)
if (cd_pin == -1)
return 1;
return !gpio_direction_input(cd_pin);
return !gpio_get_value(cd_pin);
}
static const struct mmc_ops sunxi_mmc_ops = {