usb: UniPhier: support OF configuration

If CONFIG_OF_CONTROL is defined, search device tree nodes that are
compatible with "panasonic,uniphier-ehci" and take the base address
from their "reg" property.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Marek Vasut <marex@denx.de>

10 files changed, 109 insertions, 4 deletions

diff --git a/arch/arm/cpu/armv7/uniphier/ph1-ld4/platdevice.c b/arch/arm/cpu/armv7/uniphier/ph1-ld4/platdevice.c
index 62f5b01..9d51299 100644
--- a/arch/arm/cpu/armv7/uniphier/ph1-ld4/platdevice.c
+++ b/arch/arm/cpu/armv7/uniphier/ph1-ld4/platdevice.c
@@ -14,7 +14,6 @@ SERIAL_DEVICE(1, 0x54006900, UART_MASTER_CLK)
 SERIAL_DEVICE(2, 0x54006a00, UART_MASTER_CLK)
 SERIAL_DEVICE(3, 0x54006b00, UART_MASTER_CLK)
 
-/* USB : TODO for Masahiro Yamada: move base address to Device Tree */
 struct uniphier_ehci_platform_data uniphier_ehci_platdata[] = {
 	{
 		.base = 0x5a800100,
diff --git a/arch/arm/cpu/armv7/uniphier/ph1-pro4/platdevice.c b/arch/arm/cpu/armv7/uniphier/ph1-pro4/platdevice.c
index 1843d04..31ee2a2 100644
--- a/arch/arm/cpu/armv7/uniphier/ph1-pro4/platdevice.c
+++ b/arch/arm/cpu/armv7/uniphier/ph1-pro4/platdevice.c
@@ -14,7 +14,6 @@ SERIAL_DEVICE(1, 0x54006900, UART_MASTER_CLK)
 SERIAL_DEVICE(2, 0x54006a00, UART_MASTER_CLK)
 SERIAL_DEVICE(3, 0x54006b00, UART_MASTER_CLK)
 
-/* USB : TODO for Masahiro Yamada: move base address to Device Tree */
 struct uniphier_ehci_platform_data uniphier_ehci_platdata[] = {
 	{
 		.base = 0x5a800100,
diff --git a/arch/arm/cpu/armv7/uniphier/ph1-sld8/platdevice.c b/arch/arm/cpu/armv7/uniphier/ph1-sld8/platdevice.c
index 72ec599..ea0691d 100644
--- a/arch/arm/cpu/armv7/uniphier/ph1-sld8/platdevice.c
+++ b/arch/arm/cpu/armv7/uniphier/ph1-sld8/platdevice.c
@@ -14,7 +14,6 @@ SERIAL_DEVICE(1, 0x54006900, UART_MASTER_CLK)
 SERIAL_DEVICE(2, 0x54006a00, UART_MASTER_CLK)
 SERIAL_DEVICE(3, 0x54006b00, UART_MASTER_CLK)
 
-/* USB : TODO for Masahiro Yamada: move base address to Device Tree */
 struct uniphier_ehci_platform_data uniphier_ehci_platdata[] = {
 	{
 		.base = 0x5a800100,
diff --git a/arch/arm/dts/uniphier-ph1-ld4-ref.dts b/arch/arm/dts/uniphier-ph1-ld4-ref.dts
index 20b0583..f01189c 100644
--- a/arch/arm/dts/uniphier-ph1-ld4-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-ld4-ref.dts
@@ -32,3 +32,11 @@
 &uart1 {
        status = "okay";
 };
+
+&usb0 {
+      status = "okay";
+};
+
+&usb1 {
+      status = "okay";
+};
diff --git a/arch/arm/dts/uniphier-ph1-ld4.dtsi b/arch/arm/dts/uniphier-ph1-ld4.dtsi
index c1c2c62..80074c5 100644
--- a/arch/arm/dts/uniphier-ph1-ld4.dtsi
+++ b/arch/arm/dts/uniphier-ph1-ld4.dtsi
@@ -56,5 +56,23 @@
 			reg = <0x54006b00 0x20>;
 			clock-frequency = <36864000>;
 		};
+
+		usb0: usb@5a800100 {
+			compatible = "panasonic,uniphier-ehci", "usb-ehci";
+			status = "disabled";
+			reg = <0x5a800100 0x100>;
+		};
+
+		usb1: usb@5a810100 {
+			compatible = "panasonic,uniphier-ehci", "usb-ehci";
+			status = "disabled";
+			reg = <0x5a810100 0x100>;
+		};
+
+		usb2: usb@5a820100 {
+			compatible = "panasonic,uniphier-ehci", "usb-ehci";
+			status = "disabled";
+			reg = <0x5a820100 0x100>;
+		};
 	};
 };
diff --git a/arch/arm/dts/uniphier-ph1-pro4-ref.dts b/arch/arm/dts/uniphier-ph1-pro4-ref.dts
index b42c9c8..52fa81f 100644
--- a/arch/arm/dts/uniphier-ph1-pro4-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-pro4-ref.dts
@@ -32,3 +32,11 @@
 &uart1 {
        status = "okay";
 };
+
+&usb0 {
+      status = "okay";
+};
+
+&usb1 {
+      status = "okay";
+};
diff --git a/arch/arm/dts/uniphier-ph1-pro4.dtsi b/arch/arm/dts/uniphier-ph1-pro4.dtsi
index b53fbc5..dd84269 100644
--- a/arch/arm/dts/uniphier-ph1-pro4.dtsi
+++ b/arch/arm/dts/uniphier-ph1-pro4.dtsi
@@ -62,5 +62,17 @@
 			reg = <0x54006b00 0x20>;
 			clock-frequency = <73728000>;
 		};
+
+		usb0: usb@5a800100 {
+			compatible = "panasonic,uniphier-ehci", "usb-ehci";
+			status = "disabled";
+			reg = <0x5a800100 0x100>;
+		};
+
+		usb1: usb@5a810100 {
+			compatible = "panasonic,uniphier-ehci", "usb-ehci";
+			status = "disabled";
+			reg = <0x5a810100 0x100>;
+		};
 	};
 };
diff --git a/arch/arm/dts/uniphier-ph1-sld8-ref.dts b/arch/arm/dts/uniphier-ph1-sld8-ref.dts
index 6f898a3..ac73aad 100644
--- a/arch/arm/dts/uniphier-ph1-sld8-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-sld8-ref.dts
@@ -32,3 +32,11 @@
 &uart1 {
        status = "okay";
 };
+
+&usb0 {
+      status = "okay";
+};
+
+&usb1 {
+      status = "okay";
+};
diff --git a/arch/arm/dts/uniphier-ph1-sld8.dtsi b/arch/arm/dts/uniphier-ph1-sld8.dtsi
index 9a8da5e..43a39f5 100644
--- a/arch/arm/dts/uniphier-ph1-sld8.dtsi
+++ b/arch/arm/dts/uniphier-ph1-sld8.dtsi
@@ -56,5 +56,23 @@
 			reg = <0x54006b00 0x20>;
 			clock-frequency = <80000000>;
 		};
+
+		usb0: usb@5a800100 {
+			compatible = "panasonic,uniphier-ehci", "usb-ehci";
+			status = "disabled";
+			reg = <0x5a800100 0x100>;
+		};
+
+		usb1: usb@5a810100 {
+			compatible = "panasonic,uniphier-ehci", "usb-ehci";
+			status = "disabled";
+			reg = <0x5a810100 0x100>;
+		};
+
+		usb2: usb@5a820100 {
+			compatible = "panasonic,uniphier-ehci", "usb-ehci";
+			status = "disabled";
+			reg = <0x5a820100 0x100>;
+		};
 	};
 };
diff --git a/drivers/usb/host/ehci-uniphier.c b/drivers/usb/host/ehci-uniphier.c
index 77f6c9d..32a4375 100644
--- a/drivers/usb/host/ehci-uniphier.c
+++ b/drivers/usb/host/ehci-uniphier.c
@@ -6,10 +6,43 @@
  */
 
 #include <common.h>
+#include <linux/err.h>
 #include <usb.h>
 #include <asm/arch/ehci-uniphier.h>
 #include "ehci.h"
 
+#ifdef CONFIG_OF_CONTROL
+#include <fdtdec.h>
+DECLARE_GLOBAL_DATA_PTR;
+
+#define FDT		gd->fdt_blob
+#define COMPAT		"panasonic,uniphier-ehci"
+
+static int get_uniphier_ehci_base(int index, struct ehci_hccr **base)
+{
+	int offset;
+
+	for (offset = fdt_node_offset_by_compatible(FDT, 0, COMPAT);
+	     offset >= 0;
+	     offset = fdt_node_offset_by_compatible(FDT, offset, COMPAT)) {
+		if (index == 0) {
+			*base = (struct ehci_hccr *)
+					fdtdec_get_addr(FDT, offset, "reg");
+			return 0;
+		}
+		index--;
+	}
+
+	return -ENODEV; /* not found */
+}
+#else
+static int get_uniphier_ehci_base(int index, struct ehci_hccr **base)
+{
+	*base = (struct ehci_hccr *)uniphier_ehci_platdata[index].base;
+	return 0;
+}
+#endif
+
 /*
  * Create the appropriate control structures to manage
  * a new EHCI host controller.
@@ -17,12 +50,15 @@
 int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
 		  struct ehci_hcor **hcor)
 {
+	int ret;
 	struct ehci_hccr *cr;
 	struct ehci_hcor *or;
 
 	uniphier_ehci_reset(index, 0);
 
-	cr = (struct ehci_hccr *)(uniphier_ehci_platdata[index].base);
+	ret = get_uniphier_ehci_base(index, &cr);
+	if (ret < 0)
+		return ret;
 	or = (void *)cr + HC_LENGTH(ehci_readl(&cr->cr_capbase));
 
 	*hccr = cr;