ppc/pnv: Connect PNV I2C controller to powernv10

Wires up four I2C controller instances to the powernv10 chip
XSCOM address space.

Each controller instance is wired up to two I2C buses of
its own.  No other I2C devices are connected to the buses
at this time.

Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20231017221434.810363-1-milesg@linux.vnet.ibm.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index bb4d00e266..ae8e0b45cd 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1684,6 +1684,10 @@ static void pnv_chip_power10_instance_init(Object *obj)
         object_initialize_child(obj, "pec[*]", &chip10->pecs[i],
                                 TYPE_PNV_PHB5_PEC);
     }
+
+    for (i = 0; i < pcc->i2c_num_engines; i++) {
+        object_initialize_child(obj, "i2c[*]", &chip10->i2c[i], TYPE_PNV_I2C);
+    }
 }
 
 static void pnv_chip_power10_quad_realize(Pnv10Chip *chip10, Error **errp)
@@ -1742,6 +1746,7 @@ static void pnv_chip_power10_realize(DeviceState *dev, Error **errp)
     PnvChip *chip = PNV_CHIP(dev);
     Pnv10Chip *chip10 = PNV10_CHIP(dev);
     Error *local_err = NULL;
+    int i;
 
     /* XSCOM bridge is first */
     pnv_xscom_init(chip, PNV10_XSCOM_SIZE, PNV10_XSCOM_BASE(chip));
@@ -1847,6 +1852,28 @@ static void pnv_chip_power10_realize(DeviceState *dev, Error **errp)
         error_propagate(errp, local_err);
         return;
     }
+
+
+    /*
+     * I2C
+     */
+    for (i = 0; i < pcc->i2c_num_engines; i++) {
+        Object *obj =  OBJECT(&chip10->i2c[i]);
+
+        object_property_set_int(obj, "engine", i + 1, &error_fatal);
+        object_property_set_int(obj, "num-busses", pcc->i2c_num_ports,
+                                &error_fatal);
+        object_property_set_link(obj, "chip", OBJECT(chip), &error_abort);
+        if (!qdev_realize(DEVICE(obj), NULL, errp)) {
+            return;
+        }
+        pnv_xscom_add_subregion(chip, PNV10_XSCOM_I2CM_BASE +
+                                chip10->i2c[i].engine * PNV10_XSCOM_I2CM_SIZE,
+                                &chip10->i2c[i].xscom_regs);
+        qdev_connect_gpio_out(DEVICE(&chip10->i2c[i]), 0,
+                              qdev_get_gpio_in(DEVICE(&chip10->psi),
+                                               PSIHB9_IRQ_SBE_I2C));
+    }
 }
 
 static uint32_t pnv_chip_power10_xscom_pcba(PnvChip *chip, uint64_t addr)
@@ -1874,6 +1901,8 @@ static void pnv_chip_power10_class_init(ObjectClass *klass, void *data)
     k->xscom_pcba = pnv_chip_power10_xscom_pcba;
     dc->desc = "PowerNV Chip POWER10";
     k->num_pecs = PNV10_CHIP_MAX_PEC;
+    k->i2c_num_engines = PNV10_CHIP_MAX_I2C;
+    k->i2c_num_ports = PNV10_CHIP_MAX_I2C_PORTS;
 
     device_class_set_parent_realize(dc, pnv_chip_power10_realize,
                                     &k->parent_realize);