usb: usb: dsps: update code according to the binding document

This relfects the code and dts requires changes due to recent .dts
binding updates:
- use mg prefix for the Metor Graphics specific attributes
- use power in mA not in mA/2 as specifed in the USB2.0 specification
- remove the child node for USB. This is driver specific on won't be
  reflected in the device tree
- use the "mentor" prefix instead of "mg".
- use "dr_mode" istead of "mg,port-mode" for the port mode. The former
  is used by a few other drivers.

Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

5 files changed, 67 insertions, 64 deletions

diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index a8907b57c75c..e8447a79dc7e 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -127,7 +127,7 @@
                                 status = "okay";
                         };
 
-                        phy@47401300 {
+                        usb-phy@47401300 {
                                 status = "okay";
                         };
 
diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index c26c16cace3c..648a67e74d1b 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -178,11 +178,11 @@
                                 status = "okay";
                         };
 
-                        phy@47401300 {
+                        usb-phy@47401300 {
                                 status = "okay";
                         };
 
-                        phy@47401b00 {
+                        usb-phy@47401b00 {
                                 status = "okay";
                         };
 
@@ -194,7 +194,7 @@
                                 status = "okay";
                         };
 
-                        dma@07402000  {
+                        dma-controller@07402000  {
                                 status = "okay";
                         };
                 };
diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
index e92446c6846e..a6c5033be442 100644
--- a/arch/arm/boot/dts/am335x-evmsk.dts
+++ b/arch/arm/boot/dts/am335x-evmsk.dts
@@ -214,7 +214,7 @@
                                 status = "okay";
                         };
 
-                        phy@47401300 {
+                        usb-phy@47401300 {
                                 status = "okay";
                         };
 
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index a38f8d362a86..f9c5da9c7fe1 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -354,7 +354,7 @@
                                 status = "disabled";
                         };
 
-                        usb0_phy: phy@47401300 {
+                        usb0_phy: usb-phy@47401300 {
                                 compatible = "ti,am335x-usb-phy";
                                 reg = <0x47401300 0x100>;
                                 reg-names = "phy";
@@ -364,25 +364,19 @@
 
                         usb0: usb@47401000 {
                                 compatible = "ti,musb-am33xx";
-                                ranges;
-                                #address-cells = <1>;
-                                #size-cells = <1>;
-                                reg = <0x47401000 0x200>;
-                                reg-names = "control";
                                 status = "disabled";
-
-                                musb0: usb@47401400 {
-                                        compatible = "mg,musbmhdrc";
-                                        reg = <0x47401400 0x400>;
-                                        reg-names = "mc";
-                                        interrupts = <18>;
-                                        interrupt-names = "mc";
-                                        multipoint = <1>;
-                                        num-eps = <16>;
-                                        ram-bits = <12>;
-                                        port-mode = <3>;
-                                        power = <250>;
-                                        phys = <&usb0_phy>;
+                                reg = <0x47401400 0x400
+                                        0x47401000 0x200>;
+                                reg-names = "mc", "control";
+
+                                interrupts = <18>;
+                                interrupt-names = "mc";
+                                dr_mode = "otg";
+                                mentor,multipoint = <1>;
+                                mentor,num-eps = <16>;
+                                mentor,ram-bits = <12>;
+                                mentor,power = <500>;
+                                phys = <&usb0_phy>;
 
                                 dmas = <&cppi41dma  0 0 &cppi41dma  1 0
                                         &cppi41dma  2 0 &cppi41dma  3 0
@@ -406,10 +400,9 @@
                                         "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7",
                                         "tx8", "tx9", "tx10", "tx11", "tx12", "tx13",
                                         "tx14", "tx15";
-                                };
                         };
 
-                        usb1_phy: phy@47401b00 {
+                        usb1_phy: usb-phy@47401b00 {
                                 compatible = "ti,am335x-usb-phy";
                                 reg = <0x47401b00 0x100>;
                                 reg-names = "phy";
@@ -419,25 +412,18 @@
 
                         usb1: usb@47401800 {
                                 compatible = "ti,musb-am33xx";
-                                ranges;
-                                #address-cells = <1>;
-                                #size-cells = <1>;
-                                reg = <0x47401800 0x200>;
-                                reg-names = "control";
                                 status = "disabled";
-
-                                musb1: usb@47401c00 {
-                                        compatible = "mg,musbmhdrc";
-                                        reg = <0x47401c00 0x400>;
-                                        reg-names = "mc";
-                                        interrupts = <19>;
-                                        interrupt-names = "mc";
-                                        multipoint = <1>;
-                                        num-eps = <16>;
-                                        ram-bits = <12>;
-                                        port-mode = <3>;
-                                        power = <250>;
-                                        phys = <&usb1_phy>;
+                                reg = <0x47401c00 0x400
+                                        0x47401800 0x200>;
+                                reg-names = "mc", "control";
+                                interrupts = <19>;
+                                interrupt-names = "mc";
+                                dr_mode = "otg";
+                                mentor,multipoint = <1>;
+                                mentor,num-eps = <16>;
+                                mentor,ram-bits = <12>;
+                                mentor,power = <500>;
+                                phys = <&usb1_phy>;
 
                                 dmas = <&cppi41dma 15 0 &cppi41dma 16 0
                                         &cppi41dma 17 0 &cppi41dma 18 0
@@ -461,10 +447,9 @@
                                         "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7",
                                         "tx8", "tx9", "tx10", "tx11", "tx12", "tx13",
                                         "tx14", "tx15";
-                                };
                         };
 
-                        cppi41dma: dma@07402000 {
+                        cppi41dma: dma-controller@07402000 {
                                 compatible = "ti,am3359-cppi41";
                                 reg =  <0x47400000 0x1000
                                         0x47402000 0x1000
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 4ad52e76c4dd..4ead0f5f1f4c 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -44,6 +44,7 @@
 #include <linux/of_device.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
+#include <linux/usb/of.h>
 
 #include "musb_core.h"
 
@@ -425,35 +426,51 @@ static int get_int_prop(struct device_node *dn, const char *s)
         return val;
 }
 
+static int get_musb_port_mode(struct device *dev)
+{
+        enum usb_dr_mode mode;
+
+        mode = of_usb_get_dr_mode(dev->of_node);
+        switch (mode) {
+        case USB_DR_MODE_HOST:
+                return MUSB_PORT_MODE_HOST;
+
+        case USB_DR_MODE_PERIPHERAL:
+                return MUSB_PORT_MODE_GADGET;
+
+        case USB_DR_MODE_UNKNOWN:
+        case USB_DR_MODE_OTG:
+        default:
+                return MUSB_PORT_MODE_DUAL_ROLE;
+        };
+}
+
 static int dsps_create_musb_pdev(struct dsps_glue *glue,
                 struct platform_device *parent)
 {
         struct musb_hdrc_platform_data pdata;
         struct resource resources[2];
+        struct resource *res;
         struct device *dev = &parent->dev;
         struct musb_hdrc_config *config;
         struct platform_device *musb;
         struct device_node *dn = parent->dev.of_node;
-        struct device_node *child_node;
         int ret;
 
-        child_node = of_get_child_by_name(dn, "usb");
-        if (!child_node)
-                return -EINVAL;
-
         memset(resources, 0, sizeof(resources));
-        ret = of_address_to_resource(child_node, 0, &resources[0]);
-        if (ret) {
+        res = platform_get_resource_byname(parent, IORESOURCE_MEM, "mc");
+        if (!res) {
                 dev_err(dev, "failed to get memory.\n");
-                return ret;
+                return -EINVAL;
         }
+        resources[0] = *res;
 
-        ret = of_irq_to_resource(child_node, 0, &resources[1]);
-        if (ret == 0) {
+        res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc");
+        if (!res) {
                 dev_err(dev, "failed to get irq.\n");
-                ret = -EINVAL;
-                return ret;
+                return -EINVAL;
         }
+        resources[1] = *res;
 
         /* allocate the child platform device */
         musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
@@ -465,7 +482,7 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue,
         musb->dev.parent                = dev;
         musb->dev.dma_mask              = &musb_dmamask;
         musb->dev.coherent_dma_mask     = musb_dmamask;
-        musb->dev.of_node               = of_node_get(child_node);
+        musb->dev.of_node               = of_node_get(dn);
 
         glue->musb = musb;
 
@@ -485,11 +502,12 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue,
         pdata.config = config;
         pdata.platform_ops = &dsps_ops;
 
-        config->num_eps = get_int_prop(child_node, "num-eps");
-        config->ram_bits = get_int_prop(child_node, "ram-bits");
-        pdata.mode = get_int_prop(child_node, "port-mode");
-        pdata.power = get_int_prop(child_node, "power");
-        config->multipoint = of_property_read_bool(child_node, "multipoint");
+        config->num_eps = get_int_prop(dn, "mentor,num-eps");
+        config->ram_bits = get_int_prop(dn, "mentor,ram-bits");
+        pdata.mode = get_musb_port_mode(dev);
+        /* DT keeps this entry in mA, musb expects it as per USB spec */
+        pdata.power = get_int_prop(dn, "mentor,power") / 2;
+        config->multipoint = of_property_read_bool(dn, "mentor,multipoint");
 
         ret = platform_device_add_data(musb, &pdata, sizeof(pdata));
         if (ret) {