[PULL,06/26] hw/ssi: Add a "cs" property to SSIPeripheral

Commit Message

Cédric Le Goater Sept. 1, 2023, 9:41 a.m. UTC

Boards will use this new property to identify the device CS line and
wire the SPI controllers accordingly.

Cc: Alistair Francis <[e-mail]>
Reviewed-by: Philippe Mathieu-Daudé <[e-mail]>
Reviewed-by: Joel Stanley <[e-mail]>
Signed-off-by: Cédric Le Goater <[e-mail]>
---
 include/hw/ssi/ssi.h | 3 +++
 hw/ssi/ssi.c         | 7 +++++++
 2 files changed, 10 insertions(+)

Patch

diff --git a/include/hw/ssi/ssi.h b/include/hw/ssi/ssi.h
index 6950f86810d3..c5bdf1f2165f 100644
--- a/include/hw/ssi/ssi.h
+++ b/include/hw/ssi/ssi.h
@@ -64,6 +64,9 @@  struct SSIPeripheral {
 
     /* Chip select state */
     bool cs;
+
+    /* Chip select index */
+    uint8_t cs_index;
 };
 
 extern const VMStateDescription vmstate_ssi_peripheral;
diff --git a/hw/ssi/ssi.c b/hw/ssi/ssi.c
index d54a109beeb5..4e33e0ea5bc2 100644
--- a/hw/ssi/ssi.c
+++ b/hw/ssi/ssi.c
@@ -13,6 +13,7 @@ 
  */
 
 #include "qemu/osdep.h"
+#include "hw/qdev-properties.h"
 #include "hw/ssi/ssi.h"
 #include "migration/vmstate.h"
 #include "qemu/module.h"
@@ -71,6 +72,11 @@  static void ssi_peripheral_realize(DeviceState *dev, Error **errp)
     ssc->realize(s, errp);
 }
 
+static Property ssi_peripheral_properties[] = {
+    DEFINE_PROP_UINT8("cs", SSIPeripheral, cs_index, 0),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void ssi_peripheral_class_init(ObjectClass *klass, void *data)
 {
     SSIPeripheralClass *ssc = SSI_PERIPHERAL_CLASS(klass);
@@ -81,6 +87,7 @@  static void ssi_peripheral_class_init(ObjectClass *klass, void *data)
     if (!ssc->transfer_raw) {
         ssc->transfer_raw = ssi_transfer_raw_default;
     }
+    device_class_set_props(dc, ssi_peripheral_properties);
 }
 
 static const TypeInfo ssi_peripheral_info = {