usb: dwc3: make maximum-speed a per-instance attribute
in order to allow different instances of the
core work in different maximum speeds, we will
move the maximum_speed module_parameter to
both DeviceTree (making use the new maximum-speed
DT property) and platform_data.
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index cb1eb37..0686acff 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -36,6 +36,7 @@
#include <linux/usb/otg.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
+#include <linux/usb/of.h>
#include "platform_data.h"
#include "core.h"
@@ -44,10 +45,6 @@
#include "debug.h"
-static char *maximum_speed = "super";
-module_param(maximum_speed, charp, 0);
-MODULE_PARM_DESC(maximum_speed, "Maximum supported speed.");
-
/* -------------------------------------------------------------------------- */
void dwc3_set_mode(struct dwc3 *dwc, u32 mode)
@@ -412,17 +409,25 @@
}
if (node) {
+ dwc->maximum_speed = of_usb_get_maximum_speed(node);
+
dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0);
dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1);
dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
} else {
+ dwc->maximum_speed = pdata->maximum_speed;
+
dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
dwc->needs_fifo_resize = pdata->tx_fifo_resize;
}
+ /* default to superspeed if no maximum_speed passed */
+ if (dwc->maximum_speed == USB_SPEED_UNKNOWN)
+ dwc->maximum_speed = USB_SPEED_SUPER;
+
if (IS_ERR(dwc->usb2_phy)) {
ret = PTR_ERR(dwc->usb2_phy);
@@ -467,17 +472,6 @@
dev->dma_parms = dev->parent->dma_parms;
dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask);
- if (!strncmp("super", maximum_speed, 5))
- dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
- else if (!strncmp("high", maximum_speed, 4))
- dwc->maximum_speed = DWC3_DCFG_HIGHSPEED;
- else if (!strncmp("full", maximum_speed, 4))
- dwc->maximum_speed = DWC3_DCFG_FULLSPEED1;
- else if (!strncmp("low", maximum_speed, 3))
- dwc->maximum_speed = DWC3_DCFG_LOWSPEED;
- else
- dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
-
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
pm_runtime_forbid(dev);