From ede4d5e3872d04c75a30c5e234786b012f1c6d34 Mon Sep 17 00:00:00 2001 From: Nobuhiro Iwamatsu Date: Thu, 3 Apr 2014 13:55:54 +0900 Subject: [PATCH] usb: ehci: rmobile: Add support ehci host driver of rmobile SoCs The rmobile SoC has usb host controller. This supports USB controllers listed in the R8A7790, R8A7791 and R8A7740. Signed-off-by: Nobuhiro Iwamatsu Reviewed-by: Marek Vasut --- .../include/asm/arch-rmobile/ehci-rmobile.h | 147 ++++++++++++++++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ehci-rmobile.c | 130 ++++++++++++++++ 3 files changed, 278 insertions(+) create mode 100644 arch/arm/include/asm/arch-rmobile/ehci-rmobile.h create mode 100644 drivers/usb/host/ehci-rmobile.c diff --git a/arch/arm/include/asm/arch-rmobile/ehci-rmobile.h b/arch/arm/include/asm/arch-rmobile/ehci-rmobile.h new file mode 100644 index 0000000000..463654efd3 --- /dev/null +++ b/arch/arm/include/asm/arch-rmobile/ehci-rmobile.h @@ -0,0 +1,147 @@ +/* + * Copyright (C) 2013,2014 Renesas Electronics Corporation + * Copyright (C) 2014 Nobuhiro Iwamatsu + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef __EHCI_RMOBILE_H__ +#define __EHCI_RMOBILE_H__ + +/* Register offset */ +#define OHCI_OFFSET 0x00 +#define OHCI_SIZE 0x1000 +#define EHCI_OFFSET 0x1000 +#define EHCI_SIZE 0x1000 + +#define EHCI_USBCMD (EHCI_OFFSET + 0x0020) + +/* USBCTR */ +#define DIRPD (1 << 8) +#define PLL_RST (1 << 2) +#define PCICLK_MASK (1 << 1) +#define USBH_RST (1 << 0) + +/* CMND_STS */ +#define SERREN (1 << 8) +#define PERREN (1 << 6) +#define MASTEREN (1 << 2) +#define MEMEN (1 << 1) + +/* PCIAHB_WIN1_CTR and PCIAHB_WIN2_CTR */ +#define PCIAHB_WIN_PREFETCH ((1 << 1)|(1 << 0)) + +/* AHBPCI_WIN1_CTR */ +#define PCIWIN1_PCICMD ((1 << 3)|(1 << 1)) +#define AHB_CFG_AHBPCI 0x40000000 +#define AHB_CFG_HOST 0x80000000 + +/* AHBPCI_WIN2_CTR */ +#define PCIWIN2_PCICMD ((1 << 2)|(1 << 1)) + +/* PCI_INT_ENABLE */ +#define USBH_PMEEN (1 << 19) +#define USBH_INTBEN (1 << 17) +#define USBH_INTAEN (1 << 16) + +/* AHB_BUS_CTR */ +#define SMODE_READY_CTR (1 << 17) +#define SMODE_READ_BURST (1 << 16) +#define MMODE_HBUSREQ (1 << 7) +#define MMODE_BOUNDARY ((1 << 6)|(1 << 5)) +#define MMODE_BURST_WIDTH ((1 << 4)|(1 << 3)) +#define MMODE_SINGLE_MODE ((1 << 4)|(1 << 3)) +#define MMODE_WR_INCR (1 << 2) +#define MMODE_BYTE_BURST (1 << 1) +#define MMODE_HTRANS (1 << 0) + +/* PCI_ARBITER_CTR */ +#define PCIBUS_PARK_TIMER 0x00FF0000 +#define PCIBUS_PARK_TIMER_SET 0x00070000 +#define PCIBP_MODE (1 << 12) +#define PCIREQ7 (1 << 7) +#define PCIREQ6 (1 << 6) +#define PCIREQ5 (1 << 5) +#define PCIREQ4 (1 << 4) +#define PCIREQ3 (1 << 3) +#define PCIREQ2 (1 << 2) +#define PCIREQ1 (1 << 1) +#define PCIREQ0 (1 << 0) + +#define SMSTPCR7 0xE615014C +#define SMSTPCR703 (1 << 3) + +/* Init AHB master and slave functions of the host logic */ +#define AHB_BUS_CTR_INIT \ + (SMODE_READY_CTR | MMODE_HBUSREQ | MMODE_WR_INCR | \ + MMODE_BYTE_BURST | MMODE_HTRANS) + +#define USBCTR_WIN_SIZE_1GB 0x800 + +/* PCI Configuration Registers */ +#define PCI_CONF_OHCI_OFFSET 0x10000 +#define PCI_CONF_EHCI_OFFSET 0x10100 +struct ahb_pciconf { + u32 vid_did; + u32 cmnd_sts; + u32 rev; + u32 cache_line; + u32 basead; +}; + +/* PCI Configuration Registers for AHB-PCI Bridge Registers */ +#define PCI_CONF_AHBPCI_OFFSET 0x10000 +struct ahbconf_pci_bridge { + u32 vid_did; /* 0x00 */ + u32 cmnd_sts; + u32 revid_cc; + u32 cls_lt_ht_bist; + u32 basead; /* 0x10 */ + u32 win1_basead; + u32 win2_basead; + u32 dummy0[5]; + u32 ssvdi_ssid; /* 0x2C */ + u32 dummy1[4]; + u32 intr_line_pin; +}; + +/* AHB-PCI Bridge PCI Communication Registers */ +#define AHBPCI_OFFSET 0x10800 +struct ahbcom_pci_bridge { + u32 pciahb_win1_ctr; /* 0x00 */ + u32 pciahb_win2_ctr; + u32 pciahb_dct_ctr; + u32 dummy0; + u32 ahbpci_win1_ctr; /* 0x10 */ + u32 ahbpci_win2_ctr; + u32 dummy1; + u32 ahbpci_dct_ctr; + u32 pci_int_enable; /* 0x20 */ + u32 pci_int_status; + u32 dummy2[2]; + u32 ahb_bus_ctr; /* 0x30 */ + u32 usbctr; + u32 dummy3[2]; + u32 pci_arbiter_ctr; /* 0x40 */ + u32 dummy4; + u32 pci_unit_rev; /* 0x48 */ +}; + +struct rmobile_ehci_reg { + u32 hciversion; /* hciversion/caplength */ + u32 hcsparams; /* hcsparams */ + u32 hccparams; /* hccparams */ + u32 hcsp_portroute; /* hcsp_portroute */ + u32 usbcmd; /* usbcmd */ + u32 usbsts; /* usbsts */ + u32 usbintr; /* usbintr */ + u32 frindex; /* frindex */ + u32 ctrldssegment; /* ctrldssegment */ + u32 periodiclistbase; /* periodiclistbase */ + u32 asynclistaddr; /* asynclistaddr */ + u32 dummy[9]; + u32 configflag; /* configflag */ + u32 portsc; /* portsc */ +}; + +#endif /* __EHCI_RMOBILE_H__ */ diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 578b097fc9..b301e28252 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o obj-$(CONFIG_USB_EHCI_SPEAR) += ehci-spear.o obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o obj-$(CONFIG_USB_EHCI_VCT) += ehci-vct.o +obj-$(CONFIG_USB_EHCI_RMOBILE) += ehci-rmobile.o # xhci obj-$(CONFIG_USB_XHCI) += xhci.o xhci-mem.o xhci-ring.o diff --git a/drivers/usb/host/ehci-rmobile.c b/drivers/usb/host/ehci-rmobile.c new file mode 100644 index 0000000000..049e4c4e6b --- /dev/null +++ b/drivers/usb/host/ehci-rmobile.c @@ -0,0 +1,130 @@ +/* + * EHCI HCD (Host Controller Driver) for USB. + * + * Copyright (C) 2013,2014 Renesas Electronics Corporation + * Copyright (C) 2014 Nobuhiro Iwamatsu + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include +#include +#include +#include "ehci.h" + +#if defined(CONFIG_R8A7740) +static u32 usb_base_address[CONFIG_USB_MAX_CONTROLLER_COUNT] = { + 0xC6700000 +}; +#elif defined(CONFIG_R8A7790) +static u32 usb_base_address[CONFIG_USB_MAX_CONTROLLER_COUNT] = { + 0xEE080000, /* USB0 (EHCI) */ + 0xEE0A0000, /* USB1 */ + 0xEE0C0000, /* USB2 */ + 0xEE000000 /* USB3 (USB3.0 Host)*/ +}; +#elif defined(CONFIG_R8A7791) +static u32 usb_base_address[CONFIG_USB_MAX_CONTROLLER_COUNT] = { + 0xEE080000, /* USB0 (EHCI) */ + 0xEE0C0000, /* USB1 */ + 0xEE000000 /* USB3 (USB3.0 Host)*/ +}; +#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 == (CONFIG_USB_MAX_CONTROLLER_COUNT - 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((CONFIG_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(CONFIG_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; +} -- 2.25.1