[PATCH v2] hw/arm: ast2600: Wire up EHCI controllers

[Guenter Roeck <linux@roeck-us.net>]

Initialize EHCI controllers on AST2600 using the existing
TYPE_PLATFORM_EHCI. After this change, booting ast2600-evb
into Linux successfully instantiates a USB interface after
the necessary changes are made to its devicetree files.

ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-platform: EHCI generic platform driver
ehci-platform 1e6a3000.usb: EHCI Host Controller
ehci-platform 1e6a3000.usb: new USB bus registered, assigned bus number 1
ehci-platform 1e6a3000.usb: irq 25, io mem 0x1e6a3000
ehci-platform 1e6a3000.usb: USB 2.0 started, EHCI 1.00
usb usb1: Manufacturer: Linux 5.5.0-09825-ga0802f2d0ef5-dirty ehci_hcd
usb 1-1: new high-speed USB device number 2 using ehci-platform

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v2: Rebased to master (to fix context conflict)
    Added Reviewed-by: tag

 hw/arm/aspeed_ast2600.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c
index 90cf1c755d..446b44d31c 100644
--- a/hw/arm/aspeed_ast2600.c
+++ b/hw/arm/aspeed_ast2600.c
@@ -31,6 +31,8 @@ static const hwaddr aspeed_soc_ast2600_memmap[] = {
     [ASPEED_FMC]       = 0x1E620000,
     [ASPEED_SPI1]      = 0x1E630000,
     [ASPEED_SPI2]      = 0x1E641000,
+    [ASPEED_EHCI1]     = 0x1E6A1000,
+    [ASPEED_EHCI2]     = 0x1E6A3000,
     [ASPEED_MII1]      = 0x1E650000,
     [ASPEED_MII2]      = 0x1E650008,
     [ASPEED_MII3]      = 0x1E650010,
@@ -79,6 +81,8 @@ static const int aspeed_soc_ast2600_irqmap[] = {
     [ASPEED_ADC]       = 78,
     [ASPEED_XDMA]      = 6,
     [ASPEED_SDHCI]     = 43,
+    [ASPEED_EHCI1]     = 5,
+    [ASPEED_EHCI2]     = 9,
     [ASPEED_EMMC]      = 15,
     [ASPEED_GPIO]      = 40,
     [ASPEED_GPIO_1_8V] = 11,
@@ -166,6 +170,11 @@ static void aspeed_soc_ast2600_init(Object *obj)
                               sizeof(s->spi[i]), typename);
     }
 
+    for (i = 0; i < sc->ehcis_num; i++) {
+        sysbus_init_child_obj(obj, "ehci[*]", OBJECT(&s->ehci[i]),
+                              sizeof(s->ehci[i]), TYPE_PLATFORM_EHCI);
+    }
+
     snprintf(typename, sizeof(typename), "aspeed.sdmc-%s", socname);
     sysbus_init_child_obj(obj, "sdmc", OBJECT(&s->sdmc), sizeof(s->sdmc),
                           typename);
@@ -416,6 +425,19 @@ static void aspeed_soc_ast2600_realize(DeviceState *dev, Error **errp)
                         s->spi[i].ctrl->flash_window_base);
     }
 
+    /* EHCI */
+    for (i = 0; i < sc->ehcis_num; i++) {
+        object_property_set_bool(OBJECT(&s->ehci[i]), true, "realized", &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->ehci[i]), 0,
+                        sc->memmap[ASPEED_EHCI1 + i]);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->ehci[i]), 0,
+                           aspeed_soc_get_irq(s, ASPEED_EHCI1 + i));
+    }
+
     /* SDMC - SDRAM Memory Controller */
     object_property_set_bool(OBJECT(&s->sdmc), true, "realized", &err);
     if (err) {
@@ -534,6 +556,7 @@ static void aspeed_soc_ast2600_class_init(ObjectClass *oc, void *data)
     sc->silicon_rev  = AST2600_A0_SILICON_REV;
     sc->sram_size    = 0x10000;
     sc->spis_num     = 2;
+    sc->ehcis_num    = 2;
     sc->wdts_num     = 4;
     sc->macs_num     = 4;
     sc->irqmap       = aspeed_soc_ast2600_irqmap;
-- 
2.17.1