sdhci: implement UHS-I voltage switch

[based on a patch from Alistair Francis <alistair.francis@xilinx.com>
 from qemu/xilinx tag xilinx-v2015.2]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-Id: <20180208164818.7961-22-f4bug@amsat.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/hw/sd/core.c b/hw/sd/core.c
index 498284f109..6d198ea775 100644
--- a/hw/sd/core.c
+++ b/hw/sd/core.c
@@ -41,6 +41,19 @@ static SDState *get_card(SDBus *sdbus)
     return SD_CARD(kid->child);
 }
 
+void sdbus_set_voltage(SDBus *sdbus, uint16_t millivolts)
+{
+    SDState *card = get_card(sdbus);
+
+    trace_sdbus_set_voltage(sdbus_name(sdbus), millivolts);
+    if (card) {
+        SDCardClass *sc = SD_CARD_GET_CLASS(card);
+
+        assert(sc->set_voltage);
+        sc->set_voltage(card, millivolts);
+    }
+}
+
 int sdbus_do_command(SDBus *sdbus, SDRequest *req, uint8_t *response)
 {
     SDState *card = get_card(sdbus);