[U-Boot] [PATCH v2 5/5] mmc: arm_pl180_mmci: add .getcd callback
patrice.chotard at st.com
patrice.chotard at st.com
Mon Oct 23 08:57:34 UTC 2017
From: Patrice Chotard <patrice.chotard at st.com>
Add .getcd callback to check is MMC card is present
Signed-off-by: Patrice Chotard <patrice.chotard at st.com>
---
drivers/mmc/arm_pl180_mmci.c | 24 ++++++++++++++++++++++--
drivers/mmc/arm_pl180_mmci.h | 4 ++++
2 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c
index 3de6b12..89a7c19 100644
--- a/drivers/mmc/arm_pl180_mmci.c
+++ b/drivers/mmc/arm_pl180_mmci.c
@@ -18,9 +18,10 @@
#include <malloc.h>
#include <mmc.h>
-#include "arm_pl180_mmci.h"
-
#include <asm/io.h>
+#include <asm-generic/gpio.h>
+
+#include "arm_pl180_mmci.h"
#ifdef CONFIG_DM_MMC
#include <dm.h>
@@ -435,6 +436,8 @@ static int arm_pl180_mmc_probe(struct udevice *dev)
MMC_CLOCK_MAX);
host->version2 = dev_get_driver_data(dev);
+ gpio_request_by_name(dev, "cd-gpios", 0, &host->cd_gpio, GPIOD_IS_IN);
+
bus_width = dev_read_u32_default(dev, "bus-width", 1);
switch (bus_width) {
case 8:
@@ -477,9 +480,26 @@ static int dm_host_set_ios(struct udevice *dev)
return host_set_ios(mmc);
}
+static int dm_mmc_getcd(struct udevice *dev)
+{
+ struct arm_pl180_mmc_plat *pdata = dev_get_platdata(dev);
+ struct mmc *mmc = &pdata->mmc;
+ struct pl180_mmc_host *host = mmc->priv;
+ int value = 1;
+
+ if (dm_gpio_is_valid(&host->cd_gpio)) {
+ value = dm_gpio_get_value(&host->cd_gpio);
+ if (host->cd_inverted)
+ return !value;
+ }
+
+ return value;
+}
+
static const struct dm_mmc_ops arm_pl180_dm_mmc_ops = {
.send_cmd = dm_host_request,
.set_ios = dm_host_set_ios,
+ .get_cd = dm_mmc_getcd,
};
static int arm_pl180_mmc_ofdata_to_platdata(struct udevice *dev)
diff --git a/drivers/mmc/arm_pl180_mmci.h b/drivers/mmc/arm_pl180_mmci.h
index b935288..9df4b75 100644
--- a/drivers/mmc/arm_pl180_mmci.h
+++ b/drivers/mmc/arm_pl180_mmci.h
@@ -191,6 +191,10 @@ struct pl180_mmc_host {
unsigned int pwr_init;
int version2;
struct mmc_config cfg;
+#ifdef CONFIG_DM_MMC
+ struct gpio_desc cd_gpio;
+ bool cd_inverted;
+#endif
};
int arm_pl180_mmci_init(struct pl180_mmc_host *host, struct mmc **mmc);
--
1.9.1
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