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>
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 4ad52e7..4ead0f5 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 @@
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 @@
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 @@
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) {