This adds a simple helper function to display information (bus width and
mode) based on a capability mask. Useful for debug.
Signed-off-by: Jean-Jacques Hiblot <jjhib...@ti.com>
---
drivers/mmc/mmc.c | 17 +++++++++++++++++
include/mmc.h | 1 +
2 files changed, 18 insertions(+)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 2e1cb0d..5d418c5 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1133,6 +1133,23 @@ static void mmc_set_bus_width(struct mmc *mmc, uint
width)
mmc_set_ios(mmc);
}
+void mmc_dump_capabilities(const char *text, uint caps)
+{
+ enum bus_mode mode;
+
+ printf("%s: widths [", text);
+ if (caps & MMC_MODE_8BIT)
+ printf("8, ");
+ if (caps & MMC_MODE_4BIT)
+ printf("4, ");
+ printf("1] modes [");
+
+ for (mode = MMC_LEGACY; mode < MMC_MODES_END; mode++)
+ if (MMC_CAP(mode) & caps)
+ printf("%s, ", mmc_mode_name(mode));
+ printf("\b\b]\n");
+}
+
static int sd_select_bus_freq_width(struct mmc *mmc)
{
int err;
diff --git a/include/mmc.h b/include/mmc.h
index 60a43b0..afda02d 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -422,6 +422,7 @@ enum bus_mode {
};
const char *mmc_mode_name(enum bus_mode mode);
+void mmc_dump_capabilities(const char *text, uint caps);
/*
* With CONFIG_DM_MMC enabled, struct mmc can be accessed from the MMC device
* with mmc_get_mmc_dev().
--
1.9.1
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