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// SPDX-License-Identifier: GPL-2.0
/*
* EHCI HCD (Host Controller Driver) for USB.
*
* Copyright (C) 2013,2014 Renesas Electronics Corporation
* Copyright (C) 2014 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/ehci-rmobile.h>
#include <linux/delay.h>
#include "ehci.h"
#if defined(CONFIG_R8A7740)
static u32 usb_base_address[] = {
0xC6700000
};
#elif defined(CONFIG_R8A7790)
static u32 usb_base_address[] = {
0xEE080000, /* USB0 (EHCI) */
0xEE0A0000, /* USB1 */
0xEE0C0000, /* USB2 */
};
#elif defined(CONFIG_R8A7791) || defined(CONFIG_R8A7793) || \
defined(CONFIG_R8A7794)
static u32 usb_base_address[] = {
0xEE080000, /* USB0 (EHCI) */
0xEE0C0000, /* USB1 */
};
#else
#error rmobile EHCI USB driver not supported on this platform
#endif
int ehci_hcd_stop(int index)
{
int i;
u32 base;
struct ahbcom_pci_bridge *ahbcom_pci;
base = usb_base_address[index];
ahbcom_pci = (struct ahbcom_pci_bridge *)(base + AHBPCI_OFFSET);
writel(0, &ahbcom_pci->ahb_bus_ctr);
/* reset ehci */
setbits_le32(base + EHCI_USBCMD, CMD_RESET);
for (i = 100; i > 0; i--) {
if (!(readl(base + EHCI_USBCMD) & CMD_RESET))
break;
udelay(100);
}
if (!i)
printf("error : ehci(%d) reset failed.\n", index);
if (index == (ARRAY_SIZE(usb_base_address) - 1))
setbits_le32(SMSTPCR7, SMSTPCR703);
return 0;
}
int ehci_hcd_init(int index, enum usb_init_type init,
struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
u32 base;
u32 phys_base;
struct rmobile_ehci_reg *rehci;
struct ahbcom_pci_bridge *ahbcom_pci;
struct ahbconf_pci_bridge *ahbconf_pci;
struct ahb_pciconf *ahb_pciconf_ohci;
struct ahb_pciconf *ahb_pciconf_ehci;
uint32_t cap_base;
base = usb_base_address[index];
phys_base = base;
if (index == 0)
clrbits_le32(SMSTPCR7, SMSTPCR703);
rehci = (struct rmobile_ehci_reg *)(base + EHCI_OFFSET);
ahbcom_pci = (struct ahbcom_pci_bridge *)(base + AHBPCI_OFFSET);
ahbconf_pci =
(struct ahbconf_pci_bridge *)(base + PCI_CONF_AHBPCI_OFFSET);
ahb_pciconf_ohci = (struct ahb_pciconf *)(base + PCI_CONF_OHCI_OFFSET);
ahb_pciconf_ehci = (struct ahb_pciconf *)(base + PCI_CONF_EHCI_OFFSET);
/* Clock & Reset & Direct Power Down */
clrsetbits_le32(&ahbcom_pci->usbctr,
(DIRPD | PCICLK_MASK | USBH_RST), USBCTR_WIN_SIZE_1GB);
clrbits_le32(&ahbcom_pci->usbctr, PLL_RST);
/* AHB-PCI Bridge Communication Registers */
writel(AHB_BUS_CTR_INIT, &ahbcom_pci->ahb_bus_ctr);
writel((CFG_SYS_SDRAM_BASE & 0xf0000000) | PCIAHB_WIN_PREFETCH,
&ahbcom_pci->pciahb_win1_ctr);
writel(0xf0000000 | PCIAHB_WIN_PREFETCH,
&ahbcom_pci->pciahb_win2_ctr);
writel(phys_base | PCIWIN2_PCICMD, &ahbcom_pci->ahbpci_win2_ctr);
setbits_le32(&ahbcom_pci->pci_arbiter_ctr,
PCIBP_MODE | PCIREQ1 | PCIREQ0);
/* PCI Configuration Registers for AHBPCI */
writel(PCIWIN1_PCICMD | AHB_CFG_AHBPCI,
&ahbcom_pci->ahbpci_win1_ctr);
writel(phys_base + AHBPCI_OFFSET, &ahbconf_pci->basead);
writel(CFG_SYS_SDRAM_BASE & 0xf0000000, &ahbconf_pci->win1_basead);
writel(0xf0000000, &ahbconf_pci->win2_basead);
writel(SERREN | PERREN | MASTEREN | MEMEN,
&ahbconf_pci->cmnd_sts);
/* PCI Configuration Registers for EHCI */
writel(PCIWIN1_PCICMD | AHB_CFG_HOST, &ahbcom_pci->ahbpci_win1_ctr);
writel(phys_base + OHCI_OFFSET, &ahb_pciconf_ohci->basead);
writel(phys_base + EHCI_OFFSET, &ahb_pciconf_ehci->basead);
writel(SERREN | PERREN | MASTEREN | MEMEN,
&ahb_pciconf_ohci->cmnd_sts);
writel(SERREN | PERREN | MASTEREN | MEMEN,
&ahb_pciconf_ehci->cmnd_sts);
/* Enable PCI interrupt */
setbits_le32(&ahbcom_pci->pci_int_enable,
USBH_PMEEN | USBH_INTBEN | USBH_INTAEN);
*hccr = (struct ehci_hccr *)((uint32_t)&rehci->hciversion);
cap_base = ehci_readl(&(*hccr)->cr_capbase);
*hcor = (struct ehci_hcor *)((uint32_t)*hccr + HC_LENGTH(cap_base));
return 0;
}
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