+static const struct dwc2_core_params params_ltq = {
+ .otg_cap = 2, /* non-HNP/non-SRP */
+ .otg_ver = -1,
+ .dma_enable = -1,
+ .dma_desc_enable = -1,
+ .dma_desc_fs_enable = -1,
+ .speed = -1,
+ .enable_dynamic_fifo = -1,
+ .en_multiple_tx_fifo = -1,
+ .host_rx_fifo_size = 288, /* 288 DWORDs */
+ .host_nperio_tx_fifo_size = 128, /* 128 DWORDs */
+ .host_perio_tx_fifo_size = 96, /* 96 DWORDs */
+ .max_transfer_size = 65535,
+ .max_packet_count = 511,
+ .host_channels = -1,
+ .phy_type = -1,
+ .phy_utmi_width = -1,
+ .phy_ulpi_ddr = -1,
+ .phy_ulpi_ext_vbus = -1,
+ .i2c_enable = -1,
+ .ulpi_fs_ls = -1,
+ .host_support_fs_ls_low_power = -1,
+ .host_ls_low_power_phy_clk = -1,
+ .ts_dline = -1,
+ .reload_ctl = -1,
+ .ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
+ GAHBCFG_HBSTLEN_SHIFT,
+ .uframe_sched = -1,
+ .external_id_pin_ctl = -1,
+ .hibernation = -1,
+};
+
+/*
+ * Check the dr_mode against the module configuration and hardware
+ * capabilities.
+ *
+ * The hardware, module, and dr_mode, can each be set to host, device,
+ * or otg. Check that all these values are compatible and adjust the
+ * value of dr_mode if possible.
+ *
+ * actual
+ * HW MOD dr_mode dr_mode
+ * ------------------------------
+ * HST HST any : HST
+ * HST DEV any : ---
+ * HST OTG any : HST
+ *
+ * DEV HST any : ---
+ * DEV DEV any : DEV
+ * DEV OTG any : DEV
+ *
+ * OTG HST any : HST
+ * OTG DEV any : DEV
+ * OTG OTG any : dr_mode
+ */
+static int dwc2_get_dr_mode(struct dwc2_hsotg *hsotg)
+{
+ enum usb_dr_mode mode;
+
+ hsotg->dr_mode = usb_get_dr_mode(hsotg->dev);
+ if (hsotg->dr_mode == USB_DR_MODE_UNKNOWN)
+ hsotg->dr_mode = USB_DR_MODE_OTG;
+
+ mode = hsotg->dr_mode;
+
+ if (dwc2_hw_is_device(hsotg)) {
+ if (IS_ENABLED(CONFIG_USB_DWC2_HOST)) {
+ dev_err(hsotg->dev,
+ "Controller does not support host mode.\n");
+ return -EINVAL;
+ }
+ mode = USB_DR_MODE_PERIPHERAL;
+ } else if (dwc2_hw_is_host(hsotg)) {
+ if (IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL)) {
+ dev_err(hsotg->dev,
+ "Controller does not support device mode.\n");
+ return -EINVAL;
+ }
+ mode = USB_DR_MODE_HOST;
+ } else {
+ if (IS_ENABLED(CONFIG_USB_DWC2_HOST))
+ mode = USB_DR_MODE_HOST;
+ else if (IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL))
+ mode = USB_DR_MODE_PERIPHERAL;
+ }
+
+ if (mode != hsotg->dr_mode) {
+ dev_warn(hsotg->dev,
+ "Configuration mismatch. dr_mode forced to %s\n",
+ mode == USB_DR_MODE_HOST ? "host" : "device");
+
+ hsotg->dr_mode = mode;
+ }
+
+ return 0;
+}
+