mmc: core: debugfs: Add signal_voltage to ios dump

Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com>
Reviewed-by: Philip Rakity <prakity@nvidia.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index d96c643dde1c1b38eeeeaa0504d92f2d960b4088..35c2f85b1956ead16a75673d6e29e0aa137aaaed 100644 (file)
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -144,6 +144,22 @@ static int mmc_ios_show(struct seq_file *s, void *data)
        }
        seq_printf(s, "timing spec:\t%u (%s)\n", ios->timing, str);
 
+       switch (ios->signal_voltage) {
+       case MMC_SIGNAL_VOLTAGE_330:
+               str = "3.30 V";
+               break;
+       case MMC_SIGNAL_VOLTAGE_180:
+               str = "1.80 V";
+               break;
+       case MMC_SIGNAL_VOLTAGE_120:
+               str = "1.20 V";
+               break;
+       default:
+               str = "invalid";
+               break;
+       }
+       seq_printf(s, "signal voltage:\t%u (%s)\n", ios->chip_select, str);
+
        return 0;
 }