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ec01e0ba2c
dwc3-uniphier depends on xhci-dwc3 framework, however, it is preferable to use dwc3-generic. This driver calls the exported dwc3-generic functions and redefine the SoC-dependent operations to fit dwc3-generic. Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Reviewed-by: Marek Vasut <marex@denx.de>
155 lines
4.3 KiB
C
155 lines
4.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* UniPhier Specific Glue Layer for DWC3
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*
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* Copyright (C) 2016-2017 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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* Author: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
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*/
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#include <dm.h>
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#include <dm/lists.h>
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#include <linux/bitops.h>
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#include <linux/usb/gadget.h>
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#include "core.h"
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#include "gadget.h"
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#include "dwc3-generic.h"
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#define UNIPHIER_PRO4_DWC3_RESET 0x40
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#define UNIPHIER_PRO4_DWC3_RESET_XIOMMU BIT(5)
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#define UNIPHIER_PRO4_DWC3_RESET_XLINK BIT(4)
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#define UNIPHIER_PRO4_DWC3_RESET_PHY_SS BIT(2)
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#define UNIPHIER_PRO5_DWC3_RESET 0x00
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#define UNIPHIER_PRO5_DWC3_RESET_PHY_S1 BIT(17)
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#define UNIPHIER_PRO5_DWC3_RESET_PHY_S0 BIT(16)
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#define UNIPHIER_PRO5_DWC3_RESET_XLINK BIT(15)
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#define UNIPHIER_PRO5_DWC3_RESET_XIOMMU BIT(14)
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#define UNIPHIER_PXS2_DWC3_RESET 0x00
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#define UNIPHIER_PXS2_DWC3_RESET_XLINK BIT(15)
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static void uniphier_pro4_dwc3_init(struct udevice *dev, int index,
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enum usb_dr_mode mode)
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{
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struct dwc3_glue_data *glue = dev_get_plat(dev);
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void *regs = map_physmem(glue->regs, glue->size, MAP_NOCACHE);
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u32 tmp;
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tmp = readl(regs + UNIPHIER_PRO4_DWC3_RESET);
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tmp &= ~UNIPHIER_PRO4_DWC3_RESET_PHY_SS;
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tmp |= UNIPHIER_PRO4_DWC3_RESET_XIOMMU | UNIPHIER_PRO4_DWC3_RESET_XLINK;
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writel(tmp, regs + UNIPHIER_PRO4_DWC3_RESET);
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unmap_physmem(regs, MAP_NOCACHE);
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}
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static void uniphier_pro5_dwc3_init(struct udevice *dev, int index,
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enum usb_dr_mode mode)
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{
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struct dwc3_glue_data *glue = dev_get_plat(dev);
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void *regs = map_physmem(glue->regs, glue->size, MAP_NOCACHE);
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u32 tmp;
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tmp = readl(regs + UNIPHIER_PRO5_DWC3_RESET);
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tmp &= ~(UNIPHIER_PRO5_DWC3_RESET_PHY_S1 |
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UNIPHIER_PRO5_DWC3_RESET_PHY_S0);
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tmp |= UNIPHIER_PRO5_DWC3_RESET_XLINK | UNIPHIER_PRO5_DWC3_RESET_XIOMMU;
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writel(tmp, regs + UNIPHIER_PRO5_DWC3_RESET);
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unmap_physmem(regs, MAP_NOCACHE);
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}
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static void uniphier_pxs2_dwc3_init(struct udevice *dev, int index,
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enum usb_dr_mode mode)
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{
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struct dwc3_glue_data *glue = dev_get_plat(dev);
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void *regs = map_physmem(glue->regs, glue->size, MAP_NOCACHE);
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u32 tmp;
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tmp = readl(regs + UNIPHIER_PXS2_DWC3_RESET);
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tmp |= UNIPHIER_PXS2_DWC3_RESET_XLINK;
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writel(tmp, regs + UNIPHIER_PXS2_DWC3_RESET);
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unmap_physmem(regs, MAP_NOCACHE);
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}
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static int dwc3_uniphier_glue_get_ctrl_dev(struct udevice *dev, ofnode *node)
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{
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struct udevice *child;
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const char *name;
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ofnode subnode;
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/*
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* "controller reset" belongs to glue logic, and it should be
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* accessible in .glue_configure() before access to the controller
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* begins.
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*/
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ofnode_for_each_subnode(subnode, dev_ofnode(dev)) {
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name = ofnode_get_name(subnode);
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if (!strncmp(name, "reset", 5))
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device_bind_driver_to_node(dev, "uniphier-reset",
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name, subnode, &child);
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}
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/* Get controller node that is placed separately from the glue node */
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*node = ofnode_by_compatible(dev_ofnode(dev->parent),
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"socionext,uniphier-dwc3");
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return 0;
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}
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static const struct dwc3_glue_ops uniphier_pro4_dwc3_ops = {
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.glue_get_ctrl_dev = dwc3_uniphier_glue_get_ctrl_dev,
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.glue_configure = uniphier_pro4_dwc3_init,
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};
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static const struct dwc3_glue_ops uniphier_pro5_dwc3_ops = {
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.glue_get_ctrl_dev = dwc3_uniphier_glue_get_ctrl_dev,
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.glue_configure = uniphier_pro5_dwc3_init,
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};
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static const struct dwc3_glue_ops uniphier_pxs2_dwc3_ops = {
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.glue_get_ctrl_dev = dwc3_uniphier_glue_get_ctrl_dev,
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.glue_configure = uniphier_pxs2_dwc3_init,
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};
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static const struct udevice_id uniphier_dwc3_match[] = {
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{
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.compatible = "socionext,uniphier-pro4-dwc3-glue",
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.data = (ulong)&uniphier_pro4_dwc3_ops,
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},
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{
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.compatible = "socionext,uniphier-pro5-dwc3-glue",
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.data = (ulong)&uniphier_pro5_dwc3_ops,
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},
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{
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.compatible = "socionext,uniphier-pxs2-dwc3-glue",
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.data = (ulong)&uniphier_pxs2_dwc3_ops,
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},
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{
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.compatible = "socionext,uniphier-ld20-dwc3-glue",
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.data = (ulong)&uniphier_pxs2_dwc3_ops,
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},
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{
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.compatible = "socionext,uniphier-pxs3-dwc3-glue",
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.data = (ulong)&uniphier_pxs2_dwc3_ops,
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},
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{
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.compatible = "socionext,uniphier-nx1-dwc3-glue",
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.data = (ulong)&uniphier_pxs2_dwc3_ops,
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},
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{ /* sentinel */ }
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};
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U_BOOT_DRIVER(dwc3_uniphier_wrapper) = {
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.name = "uniphier-dwc3",
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.id = UCLASS_SIMPLE_BUS,
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.of_match = uniphier_dwc3_match,
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.bind = dwc3_glue_bind,
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.probe = dwc3_glue_probe,
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.remove = dwc3_glue_remove,
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.plat_auto = sizeof(struct dwc3_glue_data),
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};
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