[08/14] hw/sd/sd: Allow for inverting polarities of presence and write-protect GPIOs

Commit Message

Bernhard Beschow Jan. 8, 2025, 9:25 a.m. UTC

Signed-off-by: Bernhard Beschow <[e-mail]>
---
 hw/sd/sd.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

Patch

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index aa8d86e1af..a50e5c20c8 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -181,6 +181,8 @@  struct SDState {
     qemu_irq inserted_cb;
     QEMUTimer *ocr_power_timer;
     bool enable;
+    bool readonly_active_low;
+    bool inserted_active_low;
     uint8_t dat_lines;
     bool cmd_line;
 };
@@ -876,8 +878,8 @@  static void sd_reset(DeviceState *dev)
     sd->cmd_line = true;
     sd->multi_blk_cnt = 0;
 
-    qemu_set_irq(sd->readonly_cb, sd_get_readonly(sd));
-    qemu_set_irq(sd->inserted_cb, sd_get_inserted(sd));
+    qemu_set_irq(sd->readonly_cb, sd_get_readonly(sd) ^ sd->readonly_active_low);
+    qemu_set_irq(sd->inserted_cb, sd_get_inserted(sd) ^ sd->inserted_active_low);
 }
 
 static void sd_cardchange(void *opaque, bool load, Error **errp)
@@ -896,9 +898,9 @@  static void sd_cardchange(void *opaque, bool load, Error **errp)
     }
 
     if (sd->me_no_qdev_me_kill_mammoth_with_rocks) {
-        qemu_set_irq(sd->inserted_cb, inserted);
+        qemu_set_irq(sd->inserted_cb, inserted ^ sd->inserted_active_low);
         if (inserted) {
-            qemu_set_irq(sd->readonly_cb, readonly);
+            qemu_set_irq(sd->readonly_cb, readonly ^ sd->readonly_active_low);
         }
     } else {
         sdbus = SD_BUS(qdev_get_parent_bus(dev));
@@ -2797,6 +2799,8 @@  static void emmc_realize(DeviceState *dev, Error **errp)
 
 static const Property sdmmc_common_properties[] = {
     DEFINE_PROP_DRIVE("drive", SDState, blk),
+    DEFINE_PROP_BOOL("cd-active-low", SDState, inserted_active_low, false),
+    DEFINE_PROP_BOOL("wp-active-low", SDState, readonly_active_low, false),
 };
 
 static const Property sd_properties[] = {