From: Glenn Miles <milesg@linux.vnet.ibm.com>

For powernv10-rainier, the Power Hypervisor code expects to see a
pca9554 device connected to the 3rd PNV I2C engine on port 1 at I2C
address 0x25 (or left-justified address of 0x4A).  This is used by
the hypervisor code to detect if a "Cable Card" is present.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 hw/misc/Kconfig     | 4 ++++
 hw/misc/meson.build | 1 +
 hw/ppc/Kconfig      | 1 +
 hw/ppc/pnv.c        | 6 ++++++
 4 files changed, 12 insertions(+)

diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
index 4fc6b29b43..83ad849b62 100644
--- a/hw/misc/Kconfig
+++ b/hw/misc/Kconfig
@@ -34,6 +34,10 @@ config PCA9552
     bool
     depends on I2C
 
+config PCA9554
+    bool
+    depends on I2C
+
 config I2C_ECHO
     bool
     default y if TEST_DEVICES
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index e4ef1da5a5..746686835b 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -4,6 +4,7 @@ system_ss.add(when: 'CONFIG_FW_CFG_DMA', if_true: files('vmcoreinfo.c'))
 system_ss.add(when: 'CONFIG_ISA_DEBUG', if_true: files('debugexit.c'))
 system_ss.add(when: 'CONFIG_ISA_TESTDEV', if_true: files('pc-testdev.c'))
 system_ss.add(when: 'CONFIG_PCA9552', if_true: files('pca9552.c'))
+system_ss.add(when: 'CONFIG_PCA9554', if_true: files('pca9554.c'))
 system_ss.add(when: 'CONFIG_PCI_TESTDEV', if_true: files('pci-testdev.c'))
 system_ss.add(when: 'CONFIG_UNIMP', if_true: files('unimp.c'))
 system_ss.add(when: 'CONFIG_EMPTY_SLOT', if_true: files('empty_slot.c'))
diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
index 8e592e4307..d97743d02f 100644
--- a/hw/ppc/Kconfig
+++ b/hw/ppc/Kconfig
@@ -33,6 +33,7 @@ config POWERNV
     select FDT_PPC
     select PCI_POWERNV
     select PCA9552
+    select PCA9554
 
 config PPC405
     bool
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 97bdfb2d1e..0755fab155 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1913,6 +1913,12 @@ static void pnv_rainier_i2c_init(PnvMachineState *pnv)
         qdev_connect_gpio_out(DEVICE(dev), 2, qdev_get_gpio_in(DEVICE(dev), 7));
         qdev_connect_gpio_out(DEVICE(dev), 3, qdev_get_gpio_in(DEVICE(dev), 8));
         qdev_connect_gpio_out(DEVICE(dev), 4, qdev_get_gpio_in(DEVICE(dev), 9));
+
+        /*
+         * Add a PCA9554 I2C device for cable card presence detection
+         * to engine 2, bus 1, address 0x25
+         */
+        i2c_slave_create_simple(chip10->i2c[2].busses[1], "pca9554", 0x25);
     }
 }
 
-- 
2.42.0