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	Implement .handle_interrupts callback as a replacement for deprecated dm_usb_gadget_handle_interrupts() function. The new callback allows for each DM capable USB gadget controller driver to define its own IRQ handling implementation without colliding with other controller drivers. Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # vim3 Link: https://lore.kernel.org/r/20240614005309.34433-5-marek.vasut+renesas@mailbox.org Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
		
			
				
	
	
		
			732 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			732 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
// SPDX-License-Identifier: GPL-2.0
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/*
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 * Generic DWC3 Glue layer
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 *
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 * Copyright (C) 2016 - 2018 Xilinx, Inc.
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 *
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 * Based on dwc3-omap.c.
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 */
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#include <cpu_func.h>
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#include <log.h>
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#include <dm.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include <dwc3-uboot.h>
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#include <generic-phy.h>
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#include <linux/bitops.h>
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#include <linux/delay.h>
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#include <linux/printk.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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#include <malloc.h>
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#include <power/regulator.h>
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#include <usb.h>
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#include "core.h"
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#include "gadget.h"
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#include <reset.h>
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#include <clk.h>
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#include <usb/xhci.h>
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#include <asm/gpio.h>
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#include "dwc3-generic.h"
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struct dwc3_generic_plat {
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	fdt_addr_t base;
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	u32 maximum_speed;
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	enum usb_dr_mode dr_mode;
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};
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struct dwc3_generic_priv {
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	void *base;
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	struct dwc3 dwc3;
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	struct phy_bulk phys;
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	struct gpio_desc *ulpi_reset;
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};
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struct dwc3_generic_host_priv {
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	struct xhci_ctrl xhci_ctrl;
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	struct dwc3_generic_priv gen_priv;
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	struct udevice *vbus_supply;
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};
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static int dwc3_generic_probe(struct udevice *dev,
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			      struct dwc3_generic_priv *priv)
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{
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	int rc;
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	struct dwc3_generic_plat *plat = dev_get_plat(dev);
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	struct dwc3 *dwc3 = &priv->dwc3;
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	struct dwc3_glue_data *glue = dev_get_plat(dev->parent);
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	int __maybe_unused index;
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	ofnode __maybe_unused node;
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	dwc3->dev = dev;
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	dwc3->maximum_speed = plat->maximum_speed;
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	dwc3->dr_mode = plat->dr_mode;
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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	dwc3_of_parse(dwc3);
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	/*
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	 * There are currently four disparate placement possibilities of DWC3
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	 * reference clock phandle in SoC DTs:
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	 * - in top level glue node, with generic subnode without clock (ZynqMP)
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	 * - in top level generic node, with no subnode (i.MX8MQ)
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	 * - in generic subnode, with other clock in top level node (i.MX8MP)
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	 * - in both top level node and generic subnode (Rockchip)
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	 * Cover all the possibilities here by looking into both nodes, start
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	 * with the top level node as that seems to be used in majority of DTs
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	 * to reference the clock.
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	 */
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	node = dev_ofnode(dev->parent);
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	index = ofnode_stringlist_search(node, "clock-names", "ref");
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	if (index < 0)
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		index = ofnode_stringlist_search(node, "clock-names", "ref_clk");
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	if (index < 0) {
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		node = dev_ofnode(dev);
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		index = ofnode_stringlist_search(node, "clock-names", "ref");
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		if (index < 0)
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			index = ofnode_stringlist_search(node, "clock-names", "ref_clk");
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	}
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	if (index >= 0)
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		dwc3->ref_clk = &glue->clks.clks[index];
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#endif
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	/*
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	 * It must hold whole USB3.0 OTG controller in resetting to hold pipe
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	 * power state in P2 before initializing TypeC PHY on RK3399 platform.
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	 */
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	if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3")) {
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		reset_assert_bulk(&glue->resets);
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		udelay(1);
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	}
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	rc = dwc3_setup_phy(dev, &priv->phys);
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	if (rc && rc != -ENOTSUPP)
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		return rc;
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	if (CONFIG_IS_ENABLED(DM_GPIO) &&
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	    device_is_compatible(dev->parent, "xlnx,zynqmp-dwc3")) {
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		priv->ulpi_reset = devm_gpiod_get_optional(dev->parent, "reset",
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							   GPIOD_IS_OUT | GPIOD_ACTIVE_LOW);
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		/* property is optional, don't return error! */
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		if (priv->ulpi_reset) {
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			/* Toggle ulpi to reset the phy. */
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			rc = dm_gpio_set_value(priv->ulpi_reset, 1);
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			if (rc)
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				return rc;
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			mdelay(5);
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			rc = dm_gpio_set_value(priv->ulpi_reset, 0);
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			if (rc)
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				return rc;
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			mdelay(5);
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		}
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	}
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	if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3"))
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		reset_deassert_bulk(&glue->resets);
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	priv->base = map_physmem(plat->base, DWC3_OTG_REGS_END, MAP_NOCACHE);
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	dwc3->regs = priv->base + DWC3_GLOBALS_REGS_START;
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	rc =  dwc3_init(dwc3);
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	if (rc) {
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		unmap_physmem(priv->base, MAP_NOCACHE);
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		return rc;
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	}
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	return 0;
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}
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static int dwc3_generic_remove(struct udevice *dev,
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			       struct dwc3_generic_priv *priv)
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{
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	struct dwc3 *dwc3 = &priv->dwc3;
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	if (CONFIG_IS_ENABLED(DM_GPIO) &&
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	    device_is_compatible(dev->parent, "xlnx,zynqmp-dwc3") &&
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	    priv->ulpi_reset) {
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		struct gpio_desc *ulpi_reset = priv->ulpi_reset;
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		dm_gpio_free(ulpi_reset->dev, ulpi_reset);
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	}
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	dwc3_remove(dwc3);
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	dwc3_shutdown_phy(dev, &priv->phys);
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	unmap_physmem(dwc3->regs, MAP_NOCACHE);
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	return 0;
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}
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static int dwc3_generic_of_to_plat(struct udevice *dev)
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{
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	struct dwc3_generic_plat *plat = dev_get_plat(dev);
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	ofnode node = dev_ofnode(dev);
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	if (!strncmp(dev->name, "port", 4) || !strncmp(dev->name, "hub", 3)) {
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		/* This is a leaf so check the parent */
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		plat->base = dev_read_addr(dev->parent);
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	} else {
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		plat->base = dev_read_addr(dev);
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	}
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	plat->maximum_speed = usb_get_maximum_speed(node);
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	if (plat->maximum_speed == USB_SPEED_UNKNOWN) {
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		pr_info("No USB maximum speed specified. Using super speed\n");
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		plat->maximum_speed = USB_SPEED_SUPER;
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	}
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	plat->dr_mode = usb_get_dr_mode(node);
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	if (plat->dr_mode == USB_DR_MODE_UNKNOWN) {
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		/* might be a leaf so check the parent for mode */
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		node = dev_ofnode(dev->parent);
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		plat->dr_mode = usb_get_dr_mode(node);
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		if (plat->dr_mode == USB_DR_MODE_UNKNOWN) {
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			pr_err("Invalid usb mode setup\n");
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			return -ENODEV;
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		}
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	}
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	return 0;
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}
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#if CONFIG_IS_ENABLED(DM_USB_GADGET)
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static int dwc3_generic_peripheral_probe(struct udevice *dev)
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{
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	struct dwc3_generic_priv *priv = dev_get_priv(dev);
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	return dwc3_generic_probe(dev, priv);
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}
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static int dwc3_generic_peripheral_remove(struct udevice *dev)
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{
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	struct dwc3_generic_priv *priv = dev_get_priv(dev);
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	return dwc3_generic_remove(dev, priv);
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}
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static int dwc3_gadget_handle_interrupts(struct udevice *dev)
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{
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	struct dwc3_generic_priv *priv = dev_get_priv(dev);
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	struct dwc3 *dwc3 = &priv->dwc3;
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	dwc3_gadget_uboot_handle_interrupt(dwc3);
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	return 0;
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}
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static const struct usb_gadget_generic_ops dwc3_gadget_ops = {
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	.handle_interrupts	= dwc3_gadget_handle_interrupts,
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};
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U_BOOT_DRIVER(dwc3_generic_peripheral) = {
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	.name	= "dwc3-generic-peripheral",
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	.id	= UCLASS_USB_GADGET_GENERIC,
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	.of_to_plat = dwc3_generic_of_to_plat,
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	.ops	= &dwc3_gadget_ops,
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	.probe = dwc3_generic_peripheral_probe,
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	.remove = dwc3_generic_peripheral_remove,
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	.priv_auto	= sizeof(struct dwc3_generic_priv),
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	.plat_auto	= sizeof(struct dwc3_generic_plat),
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};
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#endif
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#if CONFIG_IS_ENABLED(USB_HOST)
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static int dwc3_generic_host_probe(struct udevice *dev)
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{
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	struct xhci_hcor *hcor;
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	struct xhci_hccr *hccr;
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	struct dwc3_generic_host_priv *priv = dev_get_priv(dev);
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	int rc;
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	rc = dwc3_generic_probe(dev, &priv->gen_priv);
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	if (rc)
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		return rc;
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	rc = device_get_supply_regulator(dev, "vbus-supply", &priv->vbus_supply);
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	if (rc)
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		debug("%s: No vbus regulator found: %d\n", dev->name, rc);
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	/* Only returns an error if regulator is valid and failed to enable due to a driver issue */
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	rc = regulator_set_enable_if_allowed(priv->vbus_supply, true);
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	if (rc)
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		return rc;
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	hccr = (struct xhci_hccr *)priv->gen_priv.base;
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	hcor = (struct xhci_hcor *)(priv->gen_priv.base +
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			HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));
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	rc = xhci_register(dev, hccr, hcor);
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	if (rc)
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		regulator_set_enable_if_allowed(priv->vbus_supply, false);
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	return rc;
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}
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static int dwc3_generic_host_remove(struct udevice *dev)
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{
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	struct dwc3_generic_host_priv *priv = dev_get_priv(dev);
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	int rc;
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	/* This function always returns 0 */
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	xhci_deregister(dev);
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	rc = regulator_set_enable_if_allowed(priv->vbus_supply, false);
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	if (rc)
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		debug("%s: Failed to disable vbus regulator: %d\n", dev->name, rc);
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	return dwc3_generic_remove(dev, &priv->gen_priv);
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}
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U_BOOT_DRIVER(dwc3_generic_host) = {
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	.name	= "dwc3-generic-host",
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	.id	= UCLASS_USB,
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	.of_to_plat = dwc3_generic_of_to_plat,
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	.probe = dwc3_generic_host_probe,
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	.remove = dwc3_generic_host_remove,
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	.priv_auto	= sizeof(struct dwc3_generic_host_priv),
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	.plat_auto	= sizeof(struct dwc3_generic_plat),
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	.ops = &xhci_usb_ops,
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	.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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#endif
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void dwc3_imx8mp_glue_configure(struct udevice *dev, int index,
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				enum usb_dr_mode mode)
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{
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/* USB glue registers */
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#define USB_CTRL0		0x00
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#define USB_CTRL1		0x04
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#define USB_CTRL0_PORTPWR_EN	BIT(12) /* 1 - PPC enabled (default) */
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#define USB_CTRL0_USB3_FIXED	BIT(22) /* 1 - USB3 permanent attached */
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#define USB_CTRL0_USB2_FIXED	BIT(23) /* 1 - USB2 permanent attached */
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#define USB_CTRL1_OC_POLARITY	BIT(16) /* 0 - HIGH / 1 - LOW */
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#define USB_CTRL1_PWR_POLARITY	BIT(17) /* 0 - HIGH / 1 - LOW */
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	fdt_addr_t regs = dev_read_addr_index(dev, 1);
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	void *base = map_physmem(regs, 0x8, MAP_NOCACHE);
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	u32 value;
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	value = readl(base + USB_CTRL0);
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	if (dev_read_bool(dev, "fsl,permanently-attached"))
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		value |= (USB_CTRL0_USB2_FIXED | USB_CTRL0_USB3_FIXED);
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	else
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		value &= ~(USB_CTRL0_USB2_FIXED | USB_CTRL0_USB3_FIXED);
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	if (dev_read_bool(dev, "fsl,disable-port-power-control"))
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		value &= ~(USB_CTRL0_PORTPWR_EN);
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	else
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		value |= USB_CTRL0_PORTPWR_EN;
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	writel(value, base + USB_CTRL0);
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	value = readl(base + USB_CTRL1);
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	if (dev_read_bool(dev, "fsl,over-current-active-low"))
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		value |= USB_CTRL1_OC_POLARITY;
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	else
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		value &= ~USB_CTRL1_OC_POLARITY;
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	if (dev_read_bool(dev, "fsl,power-active-low"))
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		value |= USB_CTRL1_PWR_POLARITY;
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	else
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		value &= ~USB_CTRL1_PWR_POLARITY;
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	writel(value, base + USB_CTRL1);
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	unmap_physmem(base, MAP_NOCACHE);
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}
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struct dwc3_glue_ops imx8mp_ops = {
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	.glue_configure = dwc3_imx8mp_glue_configure,
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};
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void dwc3_ti_glue_configure(struct udevice *dev, int index,
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			    enum usb_dr_mode mode)
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{
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#define USBOTGSS_UTMI_OTG_STATUS		0x0084
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#define USBOTGSS_UTMI_OTG_OFFSET		0x0480
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/* UTMI_OTG_STATUS REGISTER */
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#define USBOTGSS_UTMI_OTG_STATUS_SW_MODE	BIT(31)
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#define USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT	BIT(9)
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#define USBOTGSS_UTMI_OTG_STATUS_TXBITSTUFFENABLE BIT(8)
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#define USBOTGSS_UTMI_OTG_STATUS_IDDIG		BIT(4)
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#define USBOTGSS_UTMI_OTG_STATUS_SESSEND	BIT(3)
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#define USBOTGSS_UTMI_OTG_STATUS_SESSVALID	BIT(2)
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#define USBOTGSS_UTMI_OTG_STATUS_VBUSVALID	BIT(1)
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enum dwc3_omap_utmi_mode {
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	DWC3_OMAP_UTMI_MODE_UNKNOWN = 0,
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	DWC3_OMAP_UTMI_MODE_HW,
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	DWC3_OMAP_UTMI_MODE_SW,
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};
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	u32 use_id_pin;
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	u32 host_mode;
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	u32 reg;
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	u32 utmi_mode;
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	u32 utmi_status_offset = USBOTGSS_UTMI_OTG_STATUS;
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	struct dwc3_glue_data *glue = dev_get_plat(dev);
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	void *base = map_physmem(glue->regs, 0x10000, MAP_NOCACHE);
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	if (device_is_compatible(dev, "ti,am437x-dwc3"))
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		utmi_status_offset += USBOTGSS_UTMI_OTG_OFFSET;
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	utmi_mode = dev_read_u32_default(dev, "utmi-mode",
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					 DWC3_OMAP_UTMI_MODE_UNKNOWN);
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	if (utmi_mode != DWC3_OMAP_UTMI_MODE_HW) {
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		debug("%s: OTG is not supported. defaulting to PERIPHERAL\n",
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		      dev->name);
 | 
						|
		mode = USB_DR_MODE_PERIPHERAL;
 | 
						|
	}
 | 
						|
 | 
						|
	switch (mode)  {
 | 
						|
	case USB_DR_MODE_PERIPHERAL:
 | 
						|
		use_id_pin = 0;
 | 
						|
		host_mode = 0;
 | 
						|
		break;
 | 
						|
	case USB_DR_MODE_HOST:
 | 
						|
		use_id_pin = 0;
 | 
						|
		host_mode = 1;
 | 
						|
		break;
 | 
						|
	case USB_DR_MODE_OTG:
 | 
						|
	default:
 | 
						|
		use_id_pin = 1;
 | 
						|
		host_mode = 0;
 | 
						|
		break;
 | 
						|
	}
 | 
						|
 | 
						|
	reg = readl(base + utmi_status_offset);
 | 
						|
 | 
						|
	reg &= ~(USBOTGSS_UTMI_OTG_STATUS_SW_MODE);
 | 
						|
	if (!use_id_pin)
 | 
						|
		reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
 | 
						|
 | 
						|
	writel(reg, base + utmi_status_offset);
 | 
						|
 | 
						|
	reg &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSEND |
 | 
						|
		USBOTGSS_UTMI_OTG_STATUS_VBUSVALID |
 | 
						|
		USBOTGSS_UTMI_OTG_STATUS_IDDIG);
 | 
						|
 | 
						|
	reg |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID |
 | 
						|
		USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT;
 | 
						|
 | 
						|
	if (!host_mode)
 | 
						|
		reg |= USBOTGSS_UTMI_OTG_STATUS_IDDIG |
 | 
						|
			USBOTGSS_UTMI_OTG_STATUS_VBUSVALID;
 | 
						|
 | 
						|
	writel(reg, base + utmi_status_offset);
 | 
						|
 | 
						|
	unmap_physmem(base, MAP_NOCACHE);
 | 
						|
}
 | 
						|
 | 
						|
struct dwc3_glue_ops ti_ops = {
 | 
						|
	.glue_configure = dwc3_ti_glue_configure,
 | 
						|
};
 | 
						|
 | 
						|
/* USB QSCRATCH Hardware registers */
 | 
						|
#define QSCRATCH_GENERAL_CFG 0x08
 | 
						|
#define PIPE_UTMI_CLK_SEL BIT(0)
 | 
						|
#define PIPE3_PHYSTATUS_SW BIT(3)
 | 
						|
#define PIPE_UTMI_CLK_DIS BIT(8)
 | 
						|
 | 
						|
#define QSCRATCH_HS_PHY_CTRL 0x10
 | 
						|
#define UTMI_OTG_VBUS_VALID BIT(20)
 | 
						|
#define SW_SESSVLD_SEL BIT(28)
 | 
						|
 | 
						|
#define QSCRATCH_SS_PHY_CTRL 0x30
 | 
						|
#define LANE0_PWR_PRESENT BIT(24)
 | 
						|
 | 
						|
#define PWR_EVNT_IRQ_STAT_REG 0x58
 | 
						|
#define PWR_EVNT_LPM_IN_L2_MASK BIT(4)
 | 
						|
#define PWR_EVNT_LPM_OUT_L2_MASK BIT(5)
 | 
						|
 | 
						|
#define SDM845_QSCRATCH_BASE_OFFSET 0xf8800
 | 
						|
#define SDM845_QSCRATCH_SIZE 0x400
 | 
						|
#define SDM845_DWC3_CORE_SIZE 0xcd00
 | 
						|
 | 
						|
static void dwc3_qcom_vbus_override_enable(void __iomem *qscratch_base, bool enable)
 | 
						|
{
 | 
						|
	if (enable) {
 | 
						|
		setbits_le32(qscratch_base + QSCRATCH_SS_PHY_CTRL,
 | 
						|
				  LANE0_PWR_PRESENT);
 | 
						|
		setbits_le32(qscratch_base + QSCRATCH_HS_PHY_CTRL,
 | 
						|
				  UTMI_OTG_VBUS_VALID | SW_SESSVLD_SEL);
 | 
						|
	} else {
 | 
						|
		clrbits_le32(qscratch_base + QSCRATCH_SS_PHY_CTRL,
 | 
						|
				  LANE0_PWR_PRESENT);
 | 
						|
		clrbits_le32(qscratch_base + QSCRATCH_HS_PHY_CTRL,
 | 
						|
				  UTMI_OTG_VBUS_VALID | SW_SESSVLD_SEL);
 | 
						|
	}
 | 
						|
}
 | 
						|
 | 
						|
/* For controllers running without superspeed PHYs */
 | 
						|
static void dwc3_qcom_select_utmi_clk(void __iomem *qscratch_base)
 | 
						|
{
 | 
						|
	/* Configure dwc3 to use UTMI clock as PIPE clock not present */
 | 
						|
	setbits_le32(qscratch_base + QSCRATCH_GENERAL_CFG,
 | 
						|
			  PIPE_UTMI_CLK_DIS);
 | 
						|
 | 
						|
	setbits_le32(qscratch_base + QSCRATCH_GENERAL_CFG,
 | 
						|
			  PIPE_UTMI_CLK_SEL | PIPE3_PHYSTATUS_SW);
 | 
						|
 | 
						|
	clrbits_le32(qscratch_base + QSCRATCH_GENERAL_CFG,
 | 
						|
			  PIPE_UTMI_CLK_DIS);
 | 
						|
}
 | 
						|
 | 
						|
static void dwc3_qcom_glue_configure(struct udevice *dev, int index,
 | 
						|
				     enum usb_dr_mode mode)
 | 
						|
{
 | 
						|
	struct dwc3_glue_data *glue = dev_get_plat(dev);
 | 
						|
	void __iomem *qscratch_base = map_physmem(glue->regs, 0x400, MAP_NOCACHE);
 | 
						|
	if (IS_ERR_OR_NULL(qscratch_base)) {
 | 
						|
		log_err("%s: Invalid qscratch base address\n", dev->name);
 | 
						|
		return;
 | 
						|
	}
 | 
						|
 | 
						|
	if (dev_read_bool(dev, "qcom,select-utmi-as-pipe-clk"))
 | 
						|
		dwc3_qcom_select_utmi_clk(qscratch_base);
 | 
						|
 | 
						|
	if (mode != USB_DR_MODE_HOST)
 | 
						|
		dwc3_qcom_vbus_override_enable(qscratch_base, true);
 | 
						|
}
 | 
						|
 | 
						|
struct dwc3_glue_ops qcom_ops = {
 | 
						|
	.glue_configure = dwc3_qcom_glue_configure,
 | 
						|
};
 | 
						|
 | 
						|
static int dwc3_rk_glue_get_ctrl_dev(struct udevice *dev, ofnode *node)
 | 
						|
{
 | 
						|
	*node = dev_ofnode(dev);
 | 
						|
	if (!ofnode_valid(*node))
 | 
						|
		return -EINVAL;
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
struct dwc3_glue_ops rk_ops = {
 | 
						|
	.glue_get_ctrl_dev = dwc3_rk_glue_get_ctrl_dev,
 | 
						|
};
 | 
						|
 | 
						|
static int dwc3_glue_bind_common(struct udevice *parent, ofnode node)
 | 
						|
{
 | 
						|
	const char *name = ofnode_get_name(node);
 | 
						|
	const char *driver;
 | 
						|
	enum usb_dr_mode dr_mode;
 | 
						|
	struct udevice *dev;
 | 
						|
	int ret;
 | 
						|
 | 
						|
	debug("%s: subnode name: %s\n", __func__, name);
 | 
						|
 | 
						|
	/* if the parent node doesn't have a mode check the leaf */
 | 
						|
	dr_mode = usb_get_dr_mode(dev_ofnode(parent));
 | 
						|
	if (!dr_mode)
 | 
						|
		dr_mode = usb_get_dr_mode(node);
 | 
						|
 | 
						|
	if (CONFIG_IS_ENABLED(DM_USB_GADGET) &&
 | 
						|
	    (dr_mode == USB_DR_MODE_PERIPHERAL || dr_mode == USB_DR_MODE_OTG)) {
 | 
						|
		debug("%s: dr_mode: OTG or Peripheral\n", __func__);
 | 
						|
		driver = "dwc3-generic-peripheral";
 | 
						|
	} else if (CONFIG_IS_ENABLED(USB_HOST) && dr_mode == USB_DR_MODE_HOST) {
 | 
						|
		debug("%s: dr_mode: HOST\n", __func__);
 | 
						|
		driver = "dwc3-generic-host";
 | 
						|
	} else {
 | 
						|
		debug("%s: unsupported dr_mode %d\n", __func__, dr_mode);
 | 
						|
		return -ENODEV;
 | 
						|
	}
 | 
						|
 | 
						|
	ret = device_bind_driver_to_node(parent, driver, name,
 | 
						|
					 node, &dev);
 | 
						|
	if (ret) {
 | 
						|
		debug("%s: not able to bind usb device mode\n",
 | 
						|
		      __func__);
 | 
						|
		return ret;
 | 
						|
	}
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
int dwc3_glue_bind(struct udevice *parent)
 | 
						|
{
 | 
						|
	struct dwc3_glue_ops *ops = (struct dwc3_glue_ops *)dev_get_driver_data(parent);
 | 
						|
	ofnode node;
 | 
						|
	int ret;
 | 
						|
 | 
						|
	if (ops && ops->glue_get_ctrl_dev) {
 | 
						|
		ret = ops->glue_get_ctrl_dev(parent, &node);
 | 
						|
		if (ret)
 | 
						|
			return ret;
 | 
						|
 | 
						|
		return dwc3_glue_bind_common(parent, node);
 | 
						|
	}
 | 
						|
 | 
						|
	ofnode_for_each_subnode(node, dev_ofnode(parent)) {
 | 
						|
		ret = dwc3_glue_bind_common(parent, node);
 | 
						|
		if (ret == -ENXIO)
 | 
						|
			continue;
 | 
						|
		if (ret)
 | 
						|
			return ret;
 | 
						|
	}
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
static int dwc3_glue_reset_init(struct udevice *dev,
 | 
						|
				struct dwc3_glue_data *glue)
 | 
						|
{
 | 
						|
	int ret;
 | 
						|
 | 
						|
	ret = reset_get_bulk(dev, &glue->resets);
 | 
						|
	if (ret == -ENOTSUPP || ret == -ENOENT)
 | 
						|
		return 0;
 | 
						|
	else if (ret)
 | 
						|
		return ret;
 | 
						|
 | 
						|
	if (device_is_compatible(dev, "qcom,dwc3")) {
 | 
						|
		reset_assert_bulk(&glue->resets);
 | 
						|
		/* We should wait at least 6 sleep clock cycles, that's
 | 
						|
		 * (6 / 32764) * 1000000 ~= 200us. But some platforms
 | 
						|
		 * have slower sleep clocks so we'll play it safe.
 | 
						|
		 */
 | 
						|
		udelay(500);
 | 
						|
	}
 | 
						|
	ret = reset_deassert_bulk(&glue->resets);
 | 
						|
	if (ret) {
 | 
						|
		reset_release_bulk(&glue->resets);
 | 
						|
		return ret;
 | 
						|
	}
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
static int dwc3_glue_clk_init(struct udevice *dev,
 | 
						|
			      struct dwc3_glue_data *glue)
 | 
						|
{
 | 
						|
	int ret;
 | 
						|
 | 
						|
	ret = clk_get_bulk(dev, &glue->clks);
 | 
						|
	if (ret == -ENOSYS || ret == -ENOENT)
 | 
						|
		return 0;
 | 
						|
	if (ret)
 | 
						|
		return ret;
 | 
						|
 | 
						|
#if CONFIG_IS_ENABLED(CLK)
 | 
						|
	ret = clk_enable_bulk(&glue->clks);
 | 
						|
	if (ret) {
 | 
						|
		clk_release_bulk(&glue->clks);
 | 
						|
		return ret;
 | 
						|
	}
 | 
						|
#endif
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
int dwc3_glue_probe(struct udevice *dev)
 | 
						|
{
 | 
						|
	struct dwc3_glue_ops *ops = (struct dwc3_glue_ops *)dev_get_driver_data(dev);
 | 
						|
	struct dwc3_glue_data *glue = dev_get_plat(dev);
 | 
						|
	struct udevice *child = NULL;
 | 
						|
	int index = 0;
 | 
						|
	int ret;
 | 
						|
	struct phy phy;
 | 
						|
 | 
						|
	ret = generic_phy_get_by_name(dev, "usb3-phy", &phy);
 | 
						|
	if (!ret) {
 | 
						|
		ret = generic_phy_init(&phy);
 | 
						|
		if (ret)
 | 
						|
			return ret;
 | 
						|
	} else if (ret != -ENOENT && ret != -ENODATA) {
 | 
						|
		debug("could not get phy (err %d)\n", ret);
 | 
						|
		return ret;
 | 
						|
	}
 | 
						|
 | 
						|
	glue->regs = dev_read_addr_size_index(dev, 0, &glue->size);
 | 
						|
 | 
						|
	ret = dwc3_glue_clk_init(dev, glue);
 | 
						|
	if (ret)
 | 
						|
		return ret;
 | 
						|
 | 
						|
	ret = dwc3_glue_reset_init(dev, glue);
 | 
						|
	if (ret)
 | 
						|
		return ret;
 | 
						|
 | 
						|
	if (generic_phy_valid(&phy)) {
 | 
						|
		ret = generic_phy_power_on(&phy);
 | 
						|
		if (ret)
 | 
						|
			return ret;
 | 
						|
	}
 | 
						|
 | 
						|
	device_find_first_child(dev, &child);
 | 
						|
	if (!child)
 | 
						|
		return 0;
 | 
						|
 | 
						|
	if (glue->clks.count == 0) {
 | 
						|
		ret = dwc3_glue_clk_init(child, glue);
 | 
						|
		if (ret)
 | 
						|
			return ret;
 | 
						|
	}
 | 
						|
 | 
						|
	if (glue->resets.count == 0) {
 | 
						|
		ret = dwc3_glue_reset_init(child, glue);
 | 
						|
		if (ret)
 | 
						|
			return ret;
 | 
						|
	}
 | 
						|
 | 
						|
	while (child) {
 | 
						|
		enum usb_dr_mode dr_mode;
 | 
						|
 | 
						|
		dr_mode = usb_get_dr_mode(dev_ofnode(child));
 | 
						|
		device_find_next_child(&child);
 | 
						|
		if (ops && ops->glue_configure)
 | 
						|
			ops->glue_configure(dev, index, dr_mode);
 | 
						|
		index++;
 | 
						|
	}
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
int dwc3_glue_remove(struct udevice *dev)
 | 
						|
{
 | 
						|
	struct dwc3_glue_data *glue = dev_get_plat(dev);
 | 
						|
 | 
						|
	reset_release_bulk(&glue->resets);
 | 
						|
 | 
						|
	clk_release_bulk(&glue->clks);
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
static const struct udevice_id dwc3_glue_ids[] = {
 | 
						|
	{ .compatible = "xlnx,zynqmp-dwc3" },
 | 
						|
	{ .compatible = "xlnx,versal-dwc3" },
 | 
						|
	{ .compatible = "ti,keystone-dwc3"},
 | 
						|
	{ .compatible = "ti,dwc3", .data = (ulong)&ti_ops },
 | 
						|
	{ .compatible = "ti,am437x-dwc3", .data = (ulong)&ti_ops },
 | 
						|
	{ .compatible = "ti,am654-dwc3" },
 | 
						|
	{ .compatible = "rockchip,rk3328-dwc3", .data = (ulong)&rk_ops },
 | 
						|
	{ .compatible = "rockchip,rk3399-dwc3" },
 | 
						|
	{ .compatible = "rockchip,rk3568-dwc3", .data = (ulong)&rk_ops },
 | 
						|
	{ .compatible = "rockchip,rk3588-dwc3", .data = (ulong)&rk_ops },
 | 
						|
	{ .compatible = "qcom,dwc3", .data = (ulong)&qcom_ops },
 | 
						|
	{ .compatible = "fsl,imx8mp-dwc3", .data = (ulong)&imx8mp_ops },
 | 
						|
	{ .compatible = "fsl,imx8mq-dwc3" },
 | 
						|
	{ .compatible = "intel,tangier-dwc3" },
 | 
						|
	{ }
 | 
						|
};
 | 
						|
 | 
						|
U_BOOT_DRIVER(dwc3_generic_wrapper) = {
 | 
						|
	.name	= "dwc3-generic-wrapper",
 | 
						|
	.id	= UCLASS_NOP,
 | 
						|
	.of_match = dwc3_glue_ids,
 | 
						|
	.bind = dwc3_glue_bind,
 | 
						|
	.probe = dwc3_glue_probe,
 | 
						|
	.remove = dwc3_glue_remove,
 | 
						|
	.plat_auto	= sizeof(struct dwc3_glue_data),
 | 
						|
 | 
						|
};
 |