usb: dwc3: omap: set idle and standby modes

For now, let's disable IDLE and STANDBY transitions
until we have a real HW to validate against.

Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 421b5db2dfe6..72cc92b3da02 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -76,8 +76,23 @@
 /* SYSCONFIG REGISTER */
 #define USBOTGSS_SYSCONFIG_DMADISABLE           (1 << 16)
 #define USBOTGSS_SYSCONFIG_STANDBYMODE(x)       ((x) << 4)
+
+#define USBOTGSS_STANDBYMODE_FORCE_STANDBY      0
+#define USBOTGSS_STANDBYMODE_NO_STANDBY         1
+#define USBOTGSS_STANDBYMODE_SMART_STANDBY      2
+#define USBOTGSS_STANDBYMODE_SMART_WAKEUP       3
+
+#define USBOTGSS_STANDBYMODE_MASK               (0x03 << 4)
+
 #define USBOTGSS_SYSCONFIG_IDLEMODE(x)          ((x) << 2)
 
+#define USBOTGSS_IDLEMODE_FORCE_IDLE            0
+#define USBOTGSS_IDLEMODE_NO_IDLE               1
+#define USBOTGSS_IDLEMODE_SMART_IDLE            2
+#define USBOTGSS_IDLEMODE_SMART_WAKEUP          3
+
+#define USBOTGSS_IDLEMODE_MASK                  (0x03 << 2)
+
 /* IRQ_EOI REGISTER */
 #define USBOTGSS_IRQ_EOI_LINE_NUMBER            (1 << 0)
 
@@ -270,6 +285,15 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev)
         reg = dwc3_readl(omap->base, USBOTGSS_SYSCONFIG);
         omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE);
 
+        /* Set No-Idle and No-Standby */
+        reg &= ~(USBOTGSS_STANDBYMODE_MASK
+                        | USBOTGSS_IDLEMODE_MASK);
+
+        reg |= (USBOTGSS_SYSCONFIG_STANDBYMODE(USBOTGSS_STANDBYMODE_NO_STANDBY)
+                | USBOTGSS_SYSCONFIG_IDLEMODE(USBOTGSS_IDLEMODE_NO_IDLE));
+
+        dwc3_writel(omap->base, USBOTGSS_SYSCONFIG, reg);
+
         ret = request_irq(omap->irq, dwc3_omap_interrupt, 0,
                         "dwc3-omap", omap);
         if (ret) {