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mmc: dw_mmc: support get_cd in struct dm_mmc_ops 

Add function get_cd to detect storage device directly instead of detect
it by mmc command.

Change-Id: I486dee836c62092baabe40fc6de995904849f91d
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>
This commit is contained in:
Jason Zhu 2019-02-22 21:48:53 +08:00 committed by Jianhong Chen
parent 0476014ebb
commit 5743ef647f
1 changed files with 24 additions and 0 deletions
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24
drivers/mmc/dw_mmc.c
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@ -13,6 +13,10 @@
#include <memalign.h>
#include <mmc.h>
#include <dwmmc.h>
#ifdef CONFIG_DM_GPIO
#include <asm/gpio.h>
#include <asm-generic/gpio.h>
#endif
#define PAGE_SIZE 4096
@ -623,6 +627,24 @@ static int dwmci_init(struct mmc *mmc)
return 0;
}
static int dwmci_get_cd(struct udevice *dev)
{
int ret = -1;
#ifndef CONFIG_SPL_BUILD
#ifdef CONFIG_DM_GPIO
struct gpio_desc detect;
ret = gpio_request_by_name(dev, "cd-gpios", 0, &detect, GPIOD_IS_IN);
if (ret) {
return ret;
}
ret = !dm_gpio_get_value(&detect);
#endif
#endif
return ret;
}
#ifdef CONFIG_DM_MMC
int dwmci_probe(struct udevice *dev)
{
@ -635,6 +657,7 @@ const struct dm_mmc_ops dm_dwmci_ops = {
.card_busy = dwmci_card_busy,
.send_cmd = dwmci_send_cmd,
.set_ios = dwmci_set_ios,
.get_cd = dwmci_get_cd,
.execute_tuning = dwmci_execute_tuning,
};
@ -643,6 +666,7 @@ static const struct mmc_ops dwmci_ops = {
.card_busy = dwmci_card_busy,
.send_cmd = dwmci_send_cmd,
.set_ios = dwmci_set_ios,
.get_cd = dwmci_get_cd,
.init = dwmci_init,
.execute_tuning = dwmci_execute_tuning,
};