[PULL 33/83] hw/arm: anacapa: add ADC128D818 devices

From: Emmanuel Blot <[email protected]>

Wire up the two ADC128D818 instances that appear in the Anacapa DTS:
one on i2c8 mux channel 0 and one on i2c13 mux channel 3.

Reviewed-by: Cédric Le Goater <[email protected]>
Signed-off-by: Emmanuel Blot <[email protected]>
Link: https://lore.kernel.org/qemu-devel/[email protected]
Signed-off-by: Cédric Le Goater <[email protected]>
---
 hw/arm/aspeed_ast2600_anacapa.c | 21 +++++++++++++++++----
 hw/arm/Kconfig                  |  1 +
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/hw/arm/aspeed_ast2600_anacapa.c b/hw/arm/aspeed_ast2600_anacapa.c
index bd6cc0068602..65d6b0faa2de 100644
--- a/hw/arm/aspeed_ast2600_anacapa.c
+++ b/hw/arm/aspeed_ast2600_anacapa.c
@@ -1,13 +1,14 @@
 /*
  * Facebook Anacapa
  *
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2026 Meta Platforms, Inc. and affiliates.
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
+#include "hw/sensor/adc128d818.h"
 #include "hw/arm/machines-qom.h"
 #include "hw/arm/aspeed.h"
 #include "hw/arm/aspeed_soc.h"
@@ -15,7 +16,6 @@
 #include "hw/gpio/pca9552.h"
 #include "hw/nvram/eeprom_at24c.h"
 
-/* Anacapa hardware value */
 #define ANACAPA_BMC_HW_STRAP1 0x00002002
 #define ANACAPA_BMC_HW_STRAP2 0x00000000
 #define ANACAPA_BMC_RAM_SIZE ASPEED_RAM_SIZE(2 * GiB)
@@ -221,6 +221,17 @@ static const uint8_t hpm_brd_id_eeprom[] = {
 };
 static const size_t hpm_brd_id_eeprom_len = sizeof(hpm_brd_id_eeprom);
 
+static void anacapa_add_adc128d818(I2CBus *bus, uint8_t addr,
+                                   const char *description)
+{
+    DeviceState *dev = DEVICE(i2c_slave_new(TYPE_ADC128D818, addr));
+    g_autofree char *childname = g_strdup_printf("0x%02x", addr);
+
+    qdev_prop_set_string(dev, "description", description);
+    object_property_add_child(OBJECT(bus), childname, OBJECT(dev));
+    i2c_slave_realize_and_unref(I2C_SLAVE(dev), bus, &error_fatal);
+}
+
 static void anacapa_bmc_i2c_init(AspeedMachineState *bmc)
 {
     /* Reference: aspeed-bmc-facebook-anacapa.dts */
@@ -259,7 +270,8 @@ static void anacapa_bmc_i2c_init(AspeedMachineState *bmc)
     i2c_mux = i2c_slave_create_simple(i2c[8], TYPE_PCA9546, 0x72);
 
     /* i2c8mux ch0 */
-    /* adc128d818@1f - no model */
+    /* adc128d818@1f - R-PDB ADC (mode 1: 8 voltage channels) */
+    anacapa_add_adc128d818(pca954x_i2c_get_bus(i2c_mux, 0), 0x1f, "i2c8:0:1f");
     /* pca9555@22 */
     i2c_slave_create_simple(pca954x_i2c_get_bus(i2c_mux, 0),
                             TYPE_PCA9552, 0x22);
@@ -320,7 +332,8 @@ static void anacapa_bmc_i2c_init(AspeedMachineState *bmc)
     i2c_mux = i2c_slave_create_simple(i2c[13], TYPE_PCA9548, 0x70);
 
     /* i2c13mux ch3 */
-    /* adc128d818@1f - no model */
+    /* adc128d818@1f - MB ADC (mode 1: 8 voltage channels) */
+    anacapa_add_adc128d818(pca954x_i2c_get_bus(i2c_mux, 3), 0x1f, "i2c13:3:1f");
 
     /* i2c13mux ch4 */
     /* eeprom@51 */
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 5869f0f9e895..c502e8284769 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -558,6 +558,7 @@ config ASPEED_SOC
     select LED
     select PMBUS
     select MAX31785
+    select ADC128D818
     select FSI_APB2OPB_ASPEED
     select AT24C
     select PCI_EXPRESS_ASPEED
-- 
2.55.0