USB: Add rk_usb_power_up and power_down function.

[firefly-linux-kernel-4.4.55.git] / drivers / usb / dwc_otg_310 / dwc_otg_driver.c

diff --git a/drivers/usb/dwc_otg_310/dwc_otg_driver.c b/drivers/usb/dwc_otg_310/dwc_otg_driver.c
index 93d1d2ea401b366391ce5e6d9bd034af757402e3..49026c432d17e19ef634f807f6bf636d8666f3d5 100755 (executable)
--- a/drivers/usb/dwc_otg_310/dwc_otg_driver.c
+++ b/drivers/usb/dwc_otg_310/dwc_otg_driver.c
@@ -104,6 +104,9 @@ static struct usb20host_pdata_id usb20host_pdata[] = {
 };
 #endif
 
+#ifdef CONFIG_RK_USB_UART
+static u32 usb_to_uart_status;
+#endif
 /*-------------------------------------------------------------------------*/
 /* Encapsulate the module parameter settings */
 
@@ -1571,6 +1574,82 @@ static struct platform_driver dwc_otg_driver = {
 };
 #endif
 
+void rk_usb_power_up(void)
+{
+       struct dwc_otg_platform_data *pldata_otg;
+       struct dwc_otg_platform_data *pldata_host;
+       struct rkehci_platform_data *pldata_ehci;
+
+       if(cpu_is_rk3288()){
+#ifdef CONFIG_RK_USB_UART
+               /* enable USB bypass UART function  */
+               writel_relaxed(0x00c00000 | usb_to_uart_status, RK_GRF_VIRT + RK3288_GRF_UOC0_CON3);
+
+#endif
+               /* unset siddq,the analog blocks are powered up */
+#ifdef CONFIG_USB20_OTG
+               if((pldata_otg = &usb20otg_pdata_rk3288)){
+                       if(pldata_otg->phy_status == USB_PHY_SUSPEND)
+                               writel_relaxed((0x01<<13)<<16, RK_GRF_VIRT + RK3288_GRF_UOC0_CON0);
+               }
+#endif
+#ifdef CONFIG_USB20_HOST
+               if((pldata_host = &usb20host_pdata_rk3288)){
+                       if(pldata_host->phy_status == USB_PHY_SUSPEND)
+                               writel_relaxed((0x01<<13)<<16, RK_GRF_VIRT + RK3288_GRF_UOC2_CON0);
+               }
+#endif
+#ifdef CONFIG_USB_EHCI_RK
+               if((pldata_ehci = &rkehci_pdata_rk3288)){
+                       if(pldata_ehci->phy_status == USB_PHY_SUSPEND)
+                               writel_relaxed((0x01<<13)<<16, RK_GRF_VIRT + RK3288_GRF_UOC1_CON0);
+               }
+#endif
+
+       }
+}
+
+void rk_usb_power_down(void)
+{
+       struct dwc_otg_platform_data *pldata_otg;
+       struct dwc_otg_platform_data *pldata_host;
+       struct rkehci_platform_data *pldata_ehci;
+
+       if(cpu_is_rk3288()){
+#ifdef CONFIG_RK_USB_UART
+               /* disable USB bypass UART function */
+               usb_to_uart_status = readl_relaxed(RK_GRF_VIRT + RK3288_GRF_UOC0_CON3);
+               writel_relaxed(0x00c00000, RK_GRF_VIRT + RK3288_GRF_UOC0_CON3);
+#endif
+               /* set siddq,the analog blocks are powered down
+                * note:
+                * 1. Before asserting SIDDQ, ensure that VDATSRCENB0,
+                * VDATDETENB0, DCDENB0, BYPASSSEL0, ADPPRBENB0,
+                * and TESTBURNIN are set to 1'b0.
+                * 2. Before asserting SIDDQ, ensure that phy enter suspend.*/
+#ifdef CONFIG_USB20_OTG
+               if((pldata_otg = &usb20otg_pdata_rk3288)){
+                       if(pldata_otg->phy_status == USB_PHY_SUSPEND)
+                               writel_relaxed((0x01<<13)|((0x01<<13)<<16), RK_GRF_VIRT + RK3288_GRF_UOC0_CON0);
+               }
+#endif
+#ifdef CONFIG_USB20_HOST
+               if((pldata_host = &usb20host_pdata_rk3288)){
+                       if(pldata_host->phy_status == USB_PHY_SUSPEND)
+                               writel_relaxed((0x01<<13)|((0x01<<13)<<16), RK_GRF_VIRT + RK3288_GRF_UOC2_CON0);
+               }
+#endif
+#ifdef CONFIG_USB_EHCI_RK
+               if((pldata_ehci = &rkehci_pdata_rk3288)){
+                       if(pldata_ehci->phy_status == USB_PHY_SUSPEND)
+                               writel_relaxed((0x01<<13)|((0x01<<13)<<16), RK_GRF_VIRT + RK3288_GRF_UOC1_CON0);
+               }
+#endif
+       }
+}
+
+EXPORT_SYMBOL(rk_usb_power_up);
+EXPORT_SYMBOL(rk_usb_power_down);
 /**
  * This function is called when the dwc_otg_driver is installed with the
  * insmod command. It registers the dwc_otg_driver structure with the