mmc: core: Record card drive strength
In preparation for adding drive strength support
for eMMC, add drive_strength to struct mmc_card
to record the card drive strength for UHS-I modes
and HS200 / HS400. For eMMC this will be needed
when switching between HS200 and HS400.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 9771b84..b99e25b 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -389,6 +389,8 @@
int card_drv_type, drive_strength, drv_type;
int err;
+ card->drive_strength = 0;
+
card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B;
drive_strength = mmc_select_drive_strength(card,
@@ -404,6 +406,7 @@
mmc_hostname(card->host));
return 0;
}
+ card->drive_strength = drive_strength;
}
if (drv_type)
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 73b0913..b91abed 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -406,6 +406,8 @@
unsigned char card_strength;
int err;
+ card->drive_strength = 0;
+
card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B;
drive_strength = mmc_select_drive_strength(card,
@@ -427,6 +429,7 @@
card_strength, NULL);
if (err)
return;
+ card->drive_strength = drive_strength;
}
if (drv_type)