usb: Drop the EHCI RCar Gen3

Since we use EHCI generic driver on RCar Gen3 , this driver is useless.
Remove it.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

drivers/usb/host/Kconfig

@@ -157,14 +157,6 @@ config USB_EHCI_PCI
 	help
 	  Enables support for the PCI-based EHCI controller.
 
-config USB_EHCI_RCAR_GEN3
-	bool "Support for Renesas RCar M3/H3 EHCI USB controller"
-	depends on RCAR_GEN3
-	default y
-	---help---
-	  Enables support for the on-chip EHCI controller on Renesas
-	  R8A7795 and R8A7796 SoCs.
-
 config USB_EHCI_ZYNQ
 	bool "Support for Xilinx Zynq on-chip EHCI USB controller"
 	depends on ARCH_ZYNQ

drivers/usb/host/Makefile

@@ -46,7 +46,6 @@ obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o
 obj-$(CONFIG_USB_EHCI_VCT) += ehci-vct.o
 obj-$(CONFIG_USB_EHCI_VF) += ehci-vf.o
 obj-$(CONFIG_USB_EHCI_RMOBILE) += ehci-rmobile.o
-obj-$(CONFIG_USB_EHCI_RCAR_GEN3) += ehci-rcar_gen3.o
 obj-$(CONFIG_USB_EHCI_ZYNQ) += ehci-zynq.o
 
 # xhci

drivers/usb/host/ehci-rcar_gen3.c

@@ -1,106 +0,0 @@
-/*
- * drivers/usb/host/ehci-rcar_gen3.
- *	This file is EHCI HCD (Host Controller Driver) for USB.
- *
- * Copyright (C) 2015-2017 Renesas Electronics Corporation
- *
- * SPDX-License-Identifier:     GPL-2.0+
- */
-
-#include <common.h>
-#include <errno.h>
-#include <wait_bit.h>
-#include <asm/io.h>
-#include <usb/ehci-ci.h>
-#include "ehci.h"
-
-#define RCAR_GEN3_USB_BASE(n)	(0xEE080000 + ((n) * 0x20000))
-
-#define EHCI_USBCMD		0x120
-
-#define CORE_SPD_RSM_TIMSET	0x30c
-#define CORE_OC_TIMSET		0x310
-
-/* Register offset */
-#define AHB_OFFSET		0x200
-
-#define BASE_HSUSB		0xE6590000
-#define REG_LPSTS		(BASE_HSUSB + 0x0102)	/* 16bit */
-#define SUSPM			0x4000
-#define SUSPM_NORMAL		BIT(14)
-#define REG_UGCTRL2		(BASE_HSUSB + 0x0184)	/* 32bit */
-#define USB0SEL			0x00000030
-#define USB0SEL_EHCI		0x00000010
-
-#define SMSTPCR7		0xE615014C
-#define SMSTPCR700		BIT(0)	/* EHCI3 */
-#define SMSTPCR701		BIT(1)	/* EHCI2 */
-#define SMSTPCR702		BIT(2)	/* EHCI1 */
-#define SMSTPCR703		BIT(3)	/* EHCI0 */
-#define SMSTPCR704		BIT(4)	/* HSUSB */
-
-#define AHB_PLL_RST		BIT(1)
-
-#define USBH_INTBEN		BIT(2)
-#define USBH_INTAEN		BIT(1)
-
-#define AHB_INT_ENABLE		0x200
-#define AHB_USBCTR		0x20c
-
-int ehci_hcd_stop(int index)
-{
-#if defined(CONFIG_R8A7795)
-	const u32 mask = SMSTPCR703 | SMSTPCR702 | SMSTPCR701 | SMSTPCR700;
-#else
-	const u32 mask = SMSTPCR703 | SMSTPCR702;
-#endif
-	const u32 base = RCAR_GEN3_USB_BASE(index);
-	int ret;
-
-	/* Reset EHCI */
-	setbits_le32((uintptr_t)(base + EHCI_USBCMD), CMD_RESET);
-	ret = wait_for_bit("ehci-rcar", (void *)(uintptr_t)base + EHCI_USBCMD,
-			   CMD_RESET, false, 10, true);
-	if (ret) {
-		printf("ehci-rcar: reset failed (index=%i, ret=%i).\n",
-		       index, ret);
-	}
-
-	setbits_le32(SMSTPCR7, BIT(3 - index));
-
-	if ((readl(SMSTPCR7) & mask) == mask)
-		setbits_le32(SMSTPCR7, SMSTPCR704);
-
-	return 0;
-}
-
-int ehci_hcd_init(int index, enum usb_init_type init,
-		  struct ehci_hccr **hccr, struct ehci_hcor **hcor)
-{
-	const void __iomem *base =
-		(void __iomem *)(uintptr_t)RCAR_GEN3_USB_BASE(index);
-	struct usb_ehci *ehci = (struct usb_ehci *)(uintptr_t)base;
-
-	clrbits_le32(SMSTPCR7, BIT(3 - index));
-	clrbits_le32(SMSTPCR7, SMSTPCR704);
-
-	*hccr = (struct ehci_hccr *)((uintptr_t)&ehci->caplength);
-	*hcor = (struct ehci_hcor *)((uintptr_t)*hccr +
-			HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
-
-	/* Enable interrupt */
-	setbits_le32(base + AHB_INT_ENABLE, USBH_INTBEN | USBH_INTAEN);
-	writel(0x014e029b, base + CORE_SPD_RSM_TIMSET);
-	writel(0x000209ab, base + CORE_OC_TIMSET);
-
-	/* Choice USB0SEL */
-	clrsetbits_le32(REG_UGCTRL2, USB0SEL, USB0SEL_EHCI);
-
-	/* Clock & Reset */
-	clrbits_le32(base + AHB_USBCTR, AHB_PLL_RST);
-
-	/* low power status */
-	clrsetbits_le16(REG_LPSTS, SUSPM, SUSPM_NORMAL);
-
-	return 0;
-}