149d67454SMichal Simek // SPDX-License-Identifier: GPL-2.0 249d67454SMichal Simek /* 349d67454SMichal Simek * Generic DWC3 Glue layer 449d67454SMichal Simek * 549d67454SMichal Simek * Copyright (C) 2016 - 2018 Xilinx, Inc. 649d67454SMichal Simek * 749d67454SMichal Simek * Based on dwc3-omap.c. 849d67454SMichal Simek */ 949d67454SMichal Simek 1049d67454SMichal Simek #include <common.h> 1149d67454SMichal Simek #include <dm.h> 1249d67454SMichal Simek #include <dm/device-internal.h> 1349d67454SMichal Simek #include <dm/lists.h> 14*446e3a20SJean-Jacques Hiblot #include <dwc3-uboot.h> 1549d67454SMichal Simek #include <linux/usb/ch9.h> 1649d67454SMichal Simek #include <linux/usb/gadget.h> 1749d67454SMichal Simek #include <malloc.h> 1849d67454SMichal Simek #include <usb.h> 1949d67454SMichal Simek #include "core.h" 2049d67454SMichal Simek #include "gadget.h" 21*446e3a20SJean-Jacques Hiblot #include <reset.h> 22*446e3a20SJean-Jacques Hiblot #include <clk.h> 2349d67454SMichal Simek 24687ab545SJean-Jacques Hiblot #if CONFIG_IS_ENABLED(DM_USB_GADGET) 25*446e3a20SJean-Jacques Hiblot struct dwc3_generic_peripheral { 26*446e3a20SJean-Jacques Hiblot struct dwc3 dwc3; 27*446e3a20SJean-Jacques Hiblot struct phy *phys; 28*446e3a20SJean-Jacques Hiblot int num_phys; 29*446e3a20SJean-Jacques Hiblot fdt_addr_t base; 30*446e3a20SJean-Jacques Hiblot }; 31*446e3a20SJean-Jacques Hiblot 32ff8d7558SJean-Jacques Hiblot int dm_usb_gadget_handle_interrupts(struct udevice *dev) 3349d67454SMichal Simek { 34*446e3a20SJean-Jacques Hiblot struct dwc3_generic_peripheral *priv = dev_get_priv(dev); 35*446e3a20SJean-Jacques Hiblot struct dwc3 *dwc3 = &priv->dwc3; 3649d67454SMichal Simek 37*446e3a20SJean-Jacques Hiblot dwc3_gadget_uboot_handle_interrupt(dwc3); 3849d67454SMichal Simek 3949d67454SMichal Simek return 0; 4049d67454SMichal Simek } 4149d67454SMichal Simek 4249d67454SMichal Simek static int dwc3_generic_peripheral_probe(struct udevice *dev) 4349d67454SMichal Simek { 44*446e3a20SJean-Jacques Hiblot int rc; 45*446e3a20SJean-Jacques Hiblot struct dwc3_generic_peripheral *priv = dev_get_priv(dev); 46*446e3a20SJean-Jacques Hiblot struct dwc3 *dwc3 = &priv->dwc3; 4749d67454SMichal Simek 48*446e3a20SJean-Jacques Hiblot rc = dwc3_setup_phy(dev, &priv->phys, &priv->num_phys); 49*446e3a20SJean-Jacques Hiblot if (rc) 50*446e3a20SJean-Jacques Hiblot return rc; 51*446e3a20SJean-Jacques Hiblot 52*446e3a20SJean-Jacques Hiblot dwc3->regs = map_physmem(priv->base, DWC3_OTG_REGS_END, MAP_NOCACHE); 53*446e3a20SJean-Jacques Hiblot dwc3->regs += DWC3_GLOBALS_REGS_START; 54*446e3a20SJean-Jacques Hiblot dwc3->dev = dev; 55*446e3a20SJean-Jacques Hiblot 56*446e3a20SJean-Jacques Hiblot rc = dwc3_init(dwc3); 57*446e3a20SJean-Jacques Hiblot if (rc) { 58*446e3a20SJean-Jacques Hiblot unmap_physmem(dwc3->regs, MAP_NOCACHE); 59*446e3a20SJean-Jacques Hiblot return rc; 60*446e3a20SJean-Jacques Hiblot } 61*446e3a20SJean-Jacques Hiblot 62*446e3a20SJean-Jacques Hiblot return 0; 6349d67454SMichal Simek } 6449d67454SMichal Simek 6549d67454SMichal Simek static int dwc3_generic_peripheral_remove(struct udevice *dev) 6649d67454SMichal Simek { 67*446e3a20SJean-Jacques Hiblot struct dwc3_generic_peripheral *priv = dev_get_priv(dev); 68*446e3a20SJean-Jacques Hiblot struct dwc3 *dwc3 = &priv->dwc3; 6949d67454SMichal Simek 70*446e3a20SJean-Jacques Hiblot dwc3_remove(dwc3); 71*446e3a20SJean-Jacques Hiblot dwc3_shutdown_phy(dev, priv->phys, priv->num_phys); 72*446e3a20SJean-Jacques Hiblot unmap_physmem(dwc3->regs, MAP_NOCACHE); 7349d67454SMichal Simek 7449d67454SMichal Simek return 0; 7549d67454SMichal Simek } 7649d67454SMichal Simek 7749d67454SMichal Simek static int dwc3_generic_peripheral_ofdata_to_platdata(struct udevice *dev) 7849d67454SMichal Simek { 79*446e3a20SJean-Jacques Hiblot struct dwc3_generic_peripheral *priv = dev_get_priv(dev); 80*446e3a20SJean-Jacques Hiblot struct dwc3 *dwc3 = &priv->dwc3; 8149d67454SMichal Simek int node = dev_of_offset(dev); 8249d67454SMichal Simek 83*446e3a20SJean-Jacques Hiblot priv->base = devfdt_get_addr(dev); 8449d67454SMichal Simek 85*446e3a20SJean-Jacques Hiblot dwc3->maximum_speed = usb_get_maximum_speed(node); 86*446e3a20SJean-Jacques Hiblot if (dwc3->maximum_speed == USB_SPEED_UNKNOWN) { 8749d67454SMichal Simek pr_err("Invalid usb maximum speed\n"); 8849d67454SMichal Simek return -ENODEV; 8949d67454SMichal Simek } 9049d67454SMichal Simek 91*446e3a20SJean-Jacques Hiblot dwc3->dr_mode = usb_get_dr_mode(node); 92*446e3a20SJean-Jacques Hiblot if (dwc3->dr_mode == USB_DR_MODE_UNKNOWN) { 9349d67454SMichal Simek pr_err("Invalid usb mode setup\n"); 9449d67454SMichal Simek return -ENODEV; 9549d67454SMichal Simek } 9649d67454SMichal Simek 9749d67454SMichal Simek return 0; 9849d67454SMichal Simek } 9949d67454SMichal Simek 10049d67454SMichal Simek U_BOOT_DRIVER(dwc3_generic_peripheral) = { 10149d67454SMichal Simek .name = "dwc3-generic-peripheral", 10201311624SJean-Jacques Hiblot .id = UCLASS_USB_GADGET_GENERIC, 10349d67454SMichal Simek .ofdata_to_platdata = dwc3_generic_peripheral_ofdata_to_platdata, 10449d67454SMichal Simek .probe = dwc3_generic_peripheral_probe, 10549d67454SMichal Simek .remove = dwc3_generic_peripheral_remove, 106*446e3a20SJean-Jacques Hiblot .priv_auto_alloc_size = sizeof(struct dwc3_generic_peripheral), 10749d67454SMichal Simek }; 108687ab545SJean-Jacques Hiblot #endif 10949d67454SMichal Simek 110*446e3a20SJean-Jacques Hiblot struct dwc3_glue_data { 111*446e3a20SJean-Jacques Hiblot struct clk_bulk clks; 112*446e3a20SJean-Jacques Hiblot struct reset_ctl_bulk resets; 113*446e3a20SJean-Jacques Hiblot }; 114*446e3a20SJean-Jacques Hiblot 115*446e3a20SJean-Jacques Hiblot static int dwc3_glue_bind(struct udevice *parent) 11649d67454SMichal Simek { 11749d67454SMichal Simek const void *fdt = gd->fdt_blob; 11849d67454SMichal Simek int node; 11949d67454SMichal Simek int ret; 12049d67454SMichal Simek 12149d67454SMichal Simek for (node = fdt_first_subnode(fdt, dev_of_offset(parent)); node > 0; 12249d67454SMichal Simek node = fdt_next_subnode(fdt, node)) { 12349d67454SMichal Simek const char *name = fdt_get_name(fdt, node, NULL); 12449d67454SMichal Simek enum usb_dr_mode dr_mode; 12549d67454SMichal Simek struct udevice *dev; 126*446e3a20SJean-Jacques Hiblot const char *driver = NULL; 12749d67454SMichal Simek 12849d67454SMichal Simek debug("%s: subnode name: %s\n", __func__, name); 12949d67454SMichal Simek 13049d67454SMichal Simek dr_mode = usb_get_dr_mode(node); 13149d67454SMichal Simek 13249d67454SMichal Simek switch (dr_mode) { 13349d67454SMichal Simek case USB_DR_MODE_PERIPHERAL: 13449d67454SMichal Simek case USB_DR_MODE_OTG: 135*446e3a20SJean-Jacques Hiblot #if CONFIG_IS_ENABLED(DM_USB_GADGET) 13649d67454SMichal Simek debug("%s: dr_mode: OTG or Peripheral\n", __func__); 13749d67454SMichal Simek driver = "dwc3-generic-peripheral"; 138*446e3a20SJean-Jacques Hiblot #endif 13949d67454SMichal Simek break; 14049d67454SMichal Simek case USB_DR_MODE_HOST: 14149d67454SMichal Simek debug("%s: dr_mode: HOST\n", __func__); 142*446e3a20SJean-Jacques Hiblot driver = "xhci-dwc3"; 14349d67454SMichal Simek break; 14449d67454SMichal Simek default: 14549d67454SMichal Simek debug("%s: unsupported dr_mode\n", __func__); 14649d67454SMichal Simek return -ENODEV; 14749d67454SMichal Simek }; 14849d67454SMichal Simek 149*446e3a20SJean-Jacques Hiblot if (!driver) 150*446e3a20SJean-Jacques Hiblot continue; 151*446e3a20SJean-Jacques Hiblot 15249d67454SMichal Simek ret = device_bind_driver_to_node(parent, driver, name, 15349d67454SMichal Simek offset_to_ofnode(node), &dev); 15449d67454SMichal Simek if (ret) { 15549d67454SMichal Simek debug("%s: not able to bind usb device mode\n", 15649d67454SMichal Simek __func__); 15749d67454SMichal Simek return ret; 15849d67454SMichal Simek } 15949d67454SMichal Simek } 16049d67454SMichal Simek 16149d67454SMichal Simek return 0; 16249d67454SMichal Simek } 16349d67454SMichal Simek 164*446e3a20SJean-Jacques Hiblot static int dwc3_glue_reset_init(struct udevice *dev, 165*446e3a20SJean-Jacques Hiblot struct dwc3_glue_data *glue) 166*446e3a20SJean-Jacques Hiblot { 167*446e3a20SJean-Jacques Hiblot int ret; 168*446e3a20SJean-Jacques Hiblot 169*446e3a20SJean-Jacques Hiblot ret = reset_get_bulk(dev, &glue->resets); 170*446e3a20SJean-Jacques Hiblot if (ret == -ENOTSUPP) 171*446e3a20SJean-Jacques Hiblot return 0; 172*446e3a20SJean-Jacques Hiblot else if (ret) 173*446e3a20SJean-Jacques Hiblot return ret; 174*446e3a20SJean-Jacques Hiblot 175*446e3a20SJean-Jacques Hiblot ret = reset_deassert_bulk(&glue->resets); 176*446e3a20SJean-Jacques Hiblot if (ret) { 177*446e3a20SJean-Jacques Hiblot reset_release_bulk(&glue->resets); 178*446e3a20SJean-Jacques Hiblot return ret; 179*446e3a20SJean-Jacques Hiblot } 180*446e3a20SJean-Jacques Hiblot 181*446e3a20SJean-Jacques Hiblot return 0; 182*446e3a20SJean-Jacques Hiblot } 183*446e3a20SJean-Jacques Hiblot 184*446e3a20SJean-Jacques Hiblot static int dwc3_glue_clk_init(struct udevice *dev, 185*446e3a20SJean-Jacques Hiblot struct dwc3_glue_data *glue) 186*446e3a20SJean-Jacques Hiblot { 187*446e3a20SJean-Jacques Hiblot int ret; 188*446e3a20SJean-Jacques Hiblot 189*446e3a20SJean-Jacques Hiblot ret = clk_get_bulk(dev, &glue->clks); 190*446e3a20SJean-Jacques Hiblot if (ret == -ENOSYS) 191*446e3a20SJean-Jacques Hiblot return 0; 192*446e3a20SJean-Jacques Hiblot if (ret) 193*446e3a20SJean-Jacques Hiblot return ret; 194*446e3a20SJean-Jacques Hiblot 195*446e3a20SJean-Jacques Hiblot #if CONFIG_IS_ENABLED(CLK) 196*446e3a20SJean-Jacques Hiblot ret = clk_enable_bulk(&glue->clks); 197*446e3a20SJean-Jacques Hiblot if (ret) { 198*446e3a20SJean-Jacques Hiblot clk_release_bulk(&glue->clks); 199*446e3a20SJean-Jacques Hiblot return ret; 200*446e3a20SJean-Jacques Hiblot } 201*446e3a20SJean-Jacques Hiblot #endif 202*446e3a20SJean-Jacques Hiblot 203*446e3a20SJean-Jacques Hiblot return 0; 204*446e3a20SJean-Jacques Hiblot } 205*446e3a20SJean-Jacques Hiblot 206*446e3a20SJean-Jacques Hiblot static int dwc3_glue_probe(struct udevice *dev) 207*446e3a20SJean-Jacques Hiblot { 208*446e3a20SJean-Jacques Hiblot struct dwc3_glue_data *glue = dev_get_platdata(dev); 209*446e3a20SJean-Jacques Hiblot int ret; 210*446e3a20SJean-Jacques Hiblot 211*446e3a20SJean-Jacques Hiblot ret = dwc3_glue_clk_init(dev, glue); 212*446e3a20SJean-Jacques Hiblot if (ret) 213*446e3a20SJean-Jacques Hiblot return ret; 214*446e3a20SJean-Jacques Hiblot 215*446e3a20SJean-Jacques Hiblot ret = dwc3_glue_reset_init(dev, glue); 216*446e3a20SJean-Jacques Hiblot if (ret) 217*446e3a20SJean-Jacques Hiblot return ret; 218*446e3a20SJean-Jacques Hiblot 219*446e3a20SJean-Jacques Hiblot return 0; 220*446e3a20SJean-Jacques Hiblot } 221*446e3a20SJean-Jacques Hiblot 222*446e3a20SJean-Jacques Hiblot static int dwc3_glue_remove(struct udevice *dev) 223*446e3a20SJean-Jacques Hiblot { 224*446e3a20SJean-Jacques Hiblot struct dwc3_glue_data *glue = dev_get_platdata(dev); 225*446e3a20SJean-Jacques Hiblot 226*446e3a20SJean-Jacques Hiblot reset_release_bulk(&glue->resets); 227*446e3a20SJean-Jacques Hiblot 228*446e3a20SJean-Jacques Hiblot clk_release_bulk(&glue->clks); 229*446e3a20SJean-Jacques Hiblot 230*446e3a20SJean-Jacques Hiblot return dm_scan_fdt_dev(dev); 231*446e3a20SJean-Jacques Hiblot } 232*446e3a20SJean-Jacques Hiblot 233*446e3a20SJean-Jacques Hiblot static const struct udevice_id dwc3_glue_ids[] = { 23449d67454SMichal Simek { .compatible = "xlnx,zynqmp-dwc3" }, 23549d67454SMichal Simek { } 23649d67454SMichal Simek }; 23749d67454SMichal Simek 23849d67454SMichal Simek U_BOOT_DRIVER(dwc3_generic_wrapper) = { 23949d67454SMichal Simek .name = "dwc3-generic-wrapper", 24049d67454SMichal Simek .id = UCLASS_MISC, 241*446e3a20SJean-Jacques Hiblot .of_match = dwc3_glue_ids, 242*446e3a20SJean-Jacques Hiblot .bind = dwc3_glue_bind, 243*446e3a20SJean-Jacques Hiblot .probe = dwc3_glue_probe, 244*446e3a20SJean-Jacques Hiblot .remove = dwc3_glue_remove, 245*446e3a20SJean-Jacques Hiblot .platdata_auto_alloc_size = sizeof(struct dwc3_glue_data), 246*446e3a20SJean-Jacques Hiblot 24749d67454SMichal Simek }; 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