[PATCH v4 09/10] usb: dwc3-uniphier: Use dwc3-generic instead of xhci-dwc3
Kunihiko Hayashi
hayashi.kunihiko at socionext.com
Mon Feb 20 06:50:33 CET 2023
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 at socionext.com>
Reviewed-by: Marek Vasut <marex at denx.de>
---
drivers/usb/dwc3/Kconfig | 4 +-
drivers/usb/dwc3/dwc3-uniphier.c | 116 ++++++++++++++++++++-----------
2 files changed, 78 insertions(+), 42 deletions(-)
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index f010291d02..7ddfa94e51 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -55,7 +55,9 @@ config USB_DWC3_MESON_GXL
config USB_DWC3_UNIPHIER
bool "DesignWare USB3 Host Support on UniPhier Platforms"
- depends on ARCH_UNIPHIER && USB_XHCI_DWC3
+ depends on ARCH_UNIPHIER && USB_DWC3
+ select USB_DWC3_GENERIC
+ select PHY_UNIPHIER_USB3
help
Support of USB2/3 functionality in Socionext UniPhier platforms.
Say 'Y' here if you have one such device.
diff --git a/drivers/usb/dwc3/dwc3-uniphier.c b/drivers/usb/dwc3/dwc3-uniphier.c
index 54b52dcd66..ab85428a70 100644
--- a/drivers/usb/dwc3/dwc3-uniphier.c
+++ b/drivers/usb/dwc3/dwc3-uniphier.c
@@ -4,14 +4,17 @@
*
* Copyright (C) 2016-2017 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro at socionext.com>
+ * Author: Kunihiko Hayashi <hayashi.kunihiko at socionext.com>
*/
#include <dm.h>
-#include <dm/device_compat.h>
+#include <dm/lists.h>
#include <linux/bitops.h>
-#include <linux/errno.h>
-#include <linux/io.h>
-#include <linux/sizes.h>
+#include <linux/usb/gadget.h>
+
+#include "core.h"
+#include "gadget.h"
+#include "dwc3-generic.h"
#define UNIPHIER_PRO4_DWC3_RESET 0x40
#define UNIPHIER_PRO4_DWC3_RESET_XIOMMU BIT(5)
@@ -27,8 +30,11 @@
#define UNIPHIER_PXS2_DWC3_RESET 0x00
#define UNIPHIER_PXS2_DWC3_RESET_XLINK BIT(15)
-static int uniphier_pro4_dwc3_init(void __iomem *regs)
+static void uniphier_pro4_dwc3_init(struct udevice *dev, int index,
+ enum usb_dr_mode mode)
{
+ struct dwc3_glue_data *glue = dev_get_plat(dev);
+ void *regs = map_physmem(glue->regs, glue->size, MAP_NOCACHE);
u32 tmp;
tmp = readl(regs + UNIPHIER_PRO4_DWC3_RESET);
@@ -36,11 +42,14 @@ static int uniphier_pro4_dwc3_init(void __iomem *regs)
tmp |= UNIPHIER_PRO4_DWC3_RESET_XIOMMU | UNIPHIER_PRO4_DWC3_RESET_XLINK;
writel(tmp, regs + UNIPHIER_PRO4_DWC3_RESET);
- return 0;
+ unmap_physmem(regs, MAP_NOCACHE);
}
-static int uniphier_pro5_dwc3_init(void __iomem *regs)
+static void uniphier_pro5_dwc3_init(struct udevice *dev, int index,
+ enum usb_dr_mode mode)
{
+ struct dwc3_glue_data *glue = dev_get_plat(dev);
+ void *regs = map_physmem(glue->regs, glue->size, MAP_NOCACHE);
u32 tmp;
tmp = readl(regs + UNIPHIER_PRO5_DWC3_RESET);
@@ -49,72 +58,97 @@ static int uniphier_pro5_dwc3_init(void __iomem *regs)
tmp |= UNIPHIER_PRO5_DWC3_RESET_XLINK | UNIPHIER_PRO5_DWC3_RESET_XIOMMU;
writel(tmp, regs + UNIPHIER_PRO5_DWC3_RESET);
- return 0;
+ unmap_physmem(regs, MAP_NOCACHE);
}
-static int uniphier_pxs2_dwc3_init(void __iomem *regs)
+static void uniphier_pxs2_dwc3_init(struct udevice *dev, int index,
+ enum usb_dr_mode mode)
{
+ struct dwc3_glue_data *glue = dev_get_plat(dev);
+ void *regs = map_physmem(glue->regs, glue->size, MAP_NOCACHE);
u32 tmp;
tmp = readl(regs + UNIPHIER_PXS2_DWC3_RESET);
tmp |= UNIPHIER_PXS2_DWC3_RESET_XLINK;
writel(tmp, regs + UNIPHIER_PXS2_DWC3_RESET);
- return 0;
+ unmap_physmem(regs, MAP_NOCACHE);
}
-static int uniphier_dwc3_probe(struct udevice *dev)
+static int dwc3_uniphier_glue_get_ctrl_dev(struct udevice *dev, ofnode *node)
{
- fdt_addr_t base;
- void __iomem *regs;
- int (*init)(void __iomem *regs);
- int ret;
+ struct udevice *child;
+ const char *name;
+ ofnode subnode;
+
+ /*
+ * "controller reset" belongs to glue logic, and it should be
+ * accessible in .glue_configure() before access to the controller
+ * begins.
+ */
+ ofnode_for_each_subnode(subnode, dev_ofnode(dev)) {
+ name = ofnode_get_name(subnode);
+ if (!strncmp(name, "reset", 5))
+ device_bind_driver_to_node(dev, "uniphier-reset",
+ name, subnode, &child);
+ }
+
+ /* Get controller node that is placed separately from the glue node */
+ *node = ofnode_by_compatible(dev_ofnode(dev->parent),
+ "socionext,uniphier-dwc3");
- base = dev_read_addr(dev);
- if (base == FDT_ADDR_T_NONE)
- return -EINVAL;
-
- regs = ioremap(base, SZ_32K);
- if (!regs)
- return -ENOMEM;
+ return 0;
+}
- init = (typeof(init))dev_get_driver_data(dev);
- ret = init(regs);
- if (ret)
- dev_err(dev, "failed to init glue layer\n");
+static const struct dwc3_glue_ops uniphier_pro4_dwc3_ops = {
+ .glue_get_ctrl_dev = dwc3_uniphier_glue_get_ctrl_dev,
+ .glue_configure = uniphier_pro4_dwc3_init,
+};
- iounmap(regs);
+static const struct dwc3_glue_ops uniphier_pro5_dwc3_ops = {
+ .glue_get_ctrl_dev = dwc3_uniphier_glue_get_ctrl_dev,
+ .glue_configure = uniphier_pro5_dwc3_init,
+};
- return ret;
-}
+static const struct dwc3_glue_ops uniphier_pxs2_dwc3_ops = {
+ .glue_get_ctrl_dev = dwc3_uniphier_glue_get_ctrl_dev,
+ .glue_configure = uniphier_pxs2_dwc3_init,
+};
static const struct udevice_id uniphier_dwc3_match[] = {
{
- .compatible = "socionext,uniphier-pro4-dwc3",
- .data = (ulong)uniphier_pro4_dwc3_init,
+ .compatible = "socionext,uniphier-pro4-dwc3-glue",
+ .data = (ulong)&uniphier_pro4_dwc3_ops,
+ },
+ {
+ .compatible = "socionext,uniphier-pro5-dwc3-glue",
+ .data = (ulong)&uniphier_pro5_dwc3_ops,
},
{
- .compatible = "socionext,uniphier-pro5-dwc3",
- .data = (ulong)uniphier_pro5_dwc3_init,
+ .compatible = "socionext,uniphier-pxs2-dwc3-glue",
+ .data = (ulong)&uniphier_pxs2_dwc3_ops,
},
{
- .compatible = "socionext,uniphier-pxs2-dwc3",
- .data = (ulong)uniphier_pxs2_dwc3_init,
+ .compatible = "socionext,uniphier-ld20-dwc3-glue",
+ .data = (ulong)&uniphier_pxs2_dwc3_ops,
},
{
- .compatible = "socionext,uniphier-ld20-dwc3",
- .data = (ulong)uniphier_pxs2_dwc3_init,
+ .compatible = "socionext,uniphier-pxs3-dwc3-glue",
+ .data = (ulong)&uniphier_pxs2_dwc3_ops,
},
{
- .compatible = "socionext,uniphier-pxs3-dwc3",
- .data = (ulong)uniphier_pxs2_dwc3_init,
+ .compatible = "socionext,uniphier-nx1-dwc3-glue",
+ .data = (ulong)&uniphier_pxs2_dwc3_ops,
},
{ /* sentinel */ }
};
-U_BOOT_DRIVER(usb_xhci) = {
+U_BOOT_DRIVER(dwc3_uniphier_wrapper) = {
.name = "uniphier-dwc3",
.id = UCLASS_SIMPLE_BUS,
.of_match = uniphier_dwc3_match,
- .probe = uniphier_dwc3_probe,
+ .bind = dwc3_glue_bind,
+ .probe = dwc3_glue_probe,
+ .remove = dwc3_glue_remove,
+ .plat_auto = sizeof(struct dwc3_glue_data),
};
--
2.25.1
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