[PATCH 07/10] usb: dwc3: Remove dwc3 glue driver support for STi
Patrice Chotard
patrice.chotard at foss.st.com
Tue Jan 14 15:45:25 CET 2025
STi is now using the dwc3-generic driver, dwc3-sti-glue driver
can be removed.
Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
Cc: Marek Vasut <marex at denx.de>
---
MAINTAINERS | 2 -
drivers/usb/host/Kconfig | 9 --
drivers/usb/host/Makefile | 1 -
drivers/usb/host/dwc3-sti-glue.c | 253 -------------------------------
4 files changed, 265 deletions(-)
delete mode 100644 drivers/usb/host/dwc3-sti-glue.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 8c6c0c2a4bc..0e93f88c2aa 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -657,8 +657,6 @@ F: drivers/reset/sti-reset.c
F: drivers/serial/serial_sti_asc.c
F: drivers/sysreset/sysreset_sti.c
F: drivers/timer/arm_global_timer.c
-F: drivers/usb/host/dwc3-sti-glue.c
-F: include/dwc3-sti-glue.h
F: include/dt-bindings/clock/stih407-clks.h
F: include/dt-bindings/clock/stih410-clks.h
F: include/dt-bindings/reset/stih407-resets.h
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 24786a2bc91..cd1c03f10d7 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -110,15 +110,6 @@ config USB_XHCI_RCAR
Choose this option to add support for USB 3.0 driver on Renesas
R-Car Gen3 SoCs.
-config USB_XHCI_STI
- bool "Support for STMicroelectronics STiH407 family on-chip xHCI USB controller"
- depends on ARCH_STI
- default y
- help
- Enables support for the on-chip xHCI controller on STMicroelectronics
- STiH407 family SoCs. This is a driver for the dwc3 to provide the glue logic
- to configure the controller.
-
config USB_XHCI_DRA7XX_INDEX
int "DRA7XX xHCI USB index"
range 0 1
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 301bb9fdee1..902d68d0378 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -54,7 +54,6 @@ obj-$(CONFIG_USB_XHCI_GENERIC) += xhci-generic.o
obj-$(CONFIG_USB_XHCI_OMAP) += xhci-omap.o
obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o
obj-$(CONFIG_USB_XHCI_RCAR) += xhci-rcar.o
-obj-$(CONFIG_USB_XHCI_STI) += dwc3-sti-glue.o
obj-$(CONFIG_USB_XHCI_OCTEON) += dwc3-octeon-glue.o
# designware
diff --git a/drivers/usb/host/dwc3-sti-glue.c b/drivers/usb/host/dwc3-sti-glue.c
deleted file mode 100644
index 3e6834e38e3..00000000000
--- a/drivers/usb/host/dwc3-sti-glue.c
+++ /dev/null
@@ -1,253 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * STiH407 family DWC3 specific Glue layer
- *
- * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
- * Author(s): Patrice Chotard, <patrice.chotard at foss.st.com> for STMicroelectronics.
- */
-
-#include <log.h>
-#include <asm/global_data.h>
-#include <asm/io.h>
-#include <dm.h>
-#include <errno.h>
-#include <dm/lists.h>
-#include <regmap.h>
-#include <reset-uclass.h>
-#include <syscon.h>
-#include <usb.h>
-#include <linux/printk.h>
-
-#include <linux/usb/dwc3.h>
-#include <linux/usb/otg.h>
-#include <dwc3-sti-glue.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/*
- * struct sti_dwc3_glue_plat - dwc3 STi glue driver private structure
- * @syscfg_base: addr for the glue syscfg
- * @glue_base: addr for the glue registers
- * @syscfg_offset: usb syscfg control offset
- * @powerdown_ctl: rest controller for powerdown signal
- * @softreset_ctl: reset controller for softreset signal
- * @mode: drd static host/device config
- */
-struct sti_dwc3_glue_plat {
- phys_addr_t syscfg_base;
- phys_addr_t glue_base;
- phys_addr_t syscfg_offset;
- struct reset_ctl powerdown_ctl;
- struct reset_ctl softreset_ctl;
- enum usb_dr_mode mode;
-};
-
-static int sti_dwc3_glue_drd_init(struct sti_dwc3_glue_plat *plat)
-{
- unsigned long val;
-
- val = readl(plat->syscfg_base + plat->syscfg_offset);
-
- val &= USB3_CONTROL_MASK;
-
- switch (plat->mode) {
- case USB_DR_MODE_PERIPHERAL:
- val &= ~(USB3_DELAY_VBUSVALID
- | USB3_SEL_FORCE_OPMODE | USB3_FORCE_OPMODE(0x3)
- | USB3_SEL_FORCE_DPPULLDOWN2 | USB3_FORCE_DPPULLDOWN2
- | USB3_SEL_FORCE_DMPULLDOWN2 | USB3_FORCE_DMPULLDOWN2);
-
- val |= USB3_DEVICE_NOT_HOST | USB3_FORCE_VBUSVALID;
- break;
-
- case USB_DR_MODE_HOST:
- val &= ~(USB3_DEVICE_NOT_HOST | USB3_FORCE_VBUSVALID
- | USB3_SEL_FORCE_OPMODE | USB3_FORCE_OPMODE(0x3)
- | USB3_SEL_FORCE_DPPULLDOWN2 | USB3_FORCE_DPPULLDOWN2
- | USB3_SEL_FORCE_DMPULLDOWN2 | USB3_FORCE_DMPULLDOWN2);
-
- val |= USB3_DELAY_VBUSVALID;
- break;
-
- default:
- pr_err("Unsupported mode of operation %d\n", plat->mode);
- return -EINVAL;
- }
- writel(val, plat->syscfg_base + plat->syscfg_offset);
-
- return 0;
-}
-
-static void sti_dwc3_glue_init(struct sti_dwc3_glue_plat *plat)
-{
- unsigned long reg;
-
- reg = readl(plat->glue_base + CLKRST_CTRL);
-
- reg |= AUX_CLK_EN | EXT_CFG_RESET_N | XHCI_REVISION;
- reg &= ~SW_PIPEW_RESET_N;
-
- writel(reg, plat->glue_base + CLKRST_CTRL);
-
- /* configure mux for vbus, powerpresent and bvalid signals */
- reg = readl(plat->glue_base + USB2_VBUS_MNGMNT_SEL1);
-
- reg |= SEL_OVERRIDE_VBUSVALID(USB2_VBUS_UTMIOTG) |
- SEL_OVERRIDE_POWERPRESENT(USB2_VBUS_UTMIOTG) |
- SEL_OVERRIDE_BVALID(USB2_VBUS_UTMIOTG);
-
- writel(reg, plat->glue_base + USB2_VBUS_MNGMNT_SEL1);
-
- setbits_le32(plat->glue_base + CLKRST_CTRL, SW_PIPEW_RESET_N);
-}
-
-static int sti_dwc3_glue_of_to_plat(struct udevice *dev)
-{
- struct sti_dwc3_glue_plat *plat = dev_get_plat(dev);
- struct udevice *syscon;
- struct regmap *regmap;
- int ret;
- u32 reg[4];
-
- ret = ofnode_read_u32_array(dev_ofnode(dev), "reg", reg,
- ARRAY_SIZE(reg));
- if (ret) {
- pr_err("unable to find st,stih407-dwc3 reg property(%d)\n", ret);
- return ret;
- }
-
- plat->glue_base = reg[0];
- plat->syscfg_offset = reg[2];
-
- /* get corresponding syscon phandle */
- ret = uclass_get_device_by_phandle(UCLASS_SYSCON, dev, "st,syscfg",
- &syscon);
- if (ret) {
- pr_err("unable to find syscon device (%d)\n", ret);
- return ret;
- }
-
- /* get syscfg-reg base address */
- regmap = syscon_get_regmap(syscon);
- if (!regmap) {
- pr_err("unable to find regmap\n");
- return -ENODEV;
- }
- plat->syscfg_base = regmap->ranges[0].start;
-
- /* get powerdown reset */
- ret = reset_get_by_name(dev, "powerdown", &plat->powerdown_ctl);
- if (ret) {
- pr_err("can't get powerdown reset for %s (%d)", dev->name, ret);
- return ret;
- }
-
- /* get softreset reset */
- ret = reset_get_by_name(dev, "softreset", &plat->softreset_ctl);
- if (ret)
- pr_err("can't get soft reset for %s (%d)", dev->name, ret);
-
- return ret;
-};
-
-static int sti_dwc3_glue_bind(struct udevice *dev)
-{
- struct sti_dwc3_glue_plat *plat = dev_get_plat(dev);
- ofnode node, dwc3_node;
-
- /* Find snps,dwc3 node from subnode */
- ofnode_for_each_subnode(node, dev_ofnode(dev)) {
- if (ofnode_device_is_compatible(node, "snps,dwc3"))
- dwc3_node = node;
- }
-
- if (!ofnode_valid(dwc3_node)) {
- pr_err("Can't find dwc3 subnode for %s\n", dev->name);
- return -ENODEV;
- }
-
- /* retrieve the DWC3 dual role mode */
- plat->mode = usb_get_dr_mode(dwc3_node);
- if (plat->mode == USB_DR_MODE_UNKNOWN)
- /* by default set dual role mode to HOST */
- plat->mode = USB_DR_MODE_HOST;
-
- return dm_scan_fdt_dev(dev);
-}
-
-static int sti_dwc3_glue_probe(struct udevice *dev)
-{
- struct sti_dwc3_glue_plat *plat = dev_get_plat(dev);
- int ret;
-
- /* deassert both powerdown and softreset */
- ret = reset_deassert(&plat->powerdown_ctl);
- if (ret < 0) {
- pr_err("DWC3 powerdown reset deassert failed: %d", ret);
- return ret;
- }
-
- ret = reset_deassert(&plat->softreset_ctl);
- if (ret < 0) {
- pr_err("DWC3 soft reset deassert failed: %d", ret);
- goto softreset_err;
- }
-
- ret = sti_dwc3_glue_drd_init(plat);
- if (ret)
- goto init_err;
-
- sti_dwc3_glue_init(plat);
-
- return 0;
-
-init_err:
- ret = reset_assert(&plat->softreset_ctl);
- if (ret < 0) {
- pr_err("DWC3 soft reset deassert failed: %d", ret);
- return ret;
- }
-
-softreset_err:
- ret = reset_assert(&plat->powerdown_ctl);
- if (ret < 0)
- pr_err("DWC3 powerdown reset deassert failed: %d", ret);
-
- return ret;
-}
-
-static int sti_dwc3_glue_remove(struct udevice *dev)
-{
- struct sti_dwc3_glue_plat *plat = dev_get_plat(dev);
- int ret;
-
- /* assert both powerdown and softreset */
- ret = reset_assert(&plat->powerdown_ctl);
- if (ret < 0) {
- pr_err("DWC3 powerdown reset deassert failed: %d", ret);
- return ret;
- }
-
- ret = reset_assert(&plat->softreset_ctl);
- if (ret < 0)
- pr_err("DWC3 soft reset deassert failed: %d", ret);
-
- return ret;
-}
-
-static const struct udevice_id sti_dwc3_glue_ids[] = {
- { .compatible = "st,stih407-dwc3" },
- { }
-};
-
-U_BOOT_DRIVER(dwc3_sti_glue) = {
- .name = "dwc3_sti_glue",
- .id = UCLASS_NOP,
- .of_match = sti_dwc3_glue_ids,
- .of_to_plat = sti_dwc3_glue_of_to_plat,
- .probe = sti_dwc3_glue_probe,
- .remove = sti_dwc3_glue_remove,
- .bind = sti_dwc3_glue_bind,
- .plat_auto = sizeof(struct sti_dwc3_glue_plat),
- .flags = DM_FLAG_ALLOC_PRIV_DMA,
-};
--
2.25.1
More information about the U-Boot
mailing list