[U-Boot] [PATCH] usb: ehci: rmobile: Add support ehci host driver of rmobile SoCs

Nobuhiro Iwamatsu
2014-04-02T04:29:03Z

The rmobile SoC has usb host controller.
This supports USB controllers listed in the R8A7790, R8A7791 and R8A7740.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
---
arch/arm/include/asm/arch-rmobile/ehci-rmobile.h | 169 +++++++++++++++++++++++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-rmobile.c | 109 +++++++++++++++
3 files changed, 279 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 0000000..126b104
--- /dev/null
+++ b/arch/arm/include/asm/arch-rmobile/ehci-rmobile.h
@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2013,2014 Renesas Electronics Corporation
+ * Copyright (C) 2014 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
+ *
+ * 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 PHYS_OFFSET CONFIG_SYS_SDRAM_BASE
+#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 */
+};
+
+#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
+
+#endif /* __EHCI_RMOBILE_H__ */
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 578b097..b301e28 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 0000000..35eca12
--- /dev/null
+++ b/drivers/usb/host/ehci-rmobile.c
@@ -0,0 +1,109 @@
+/*
+ * EHCI HCD (Host Controller Driver) for USB.
+ *
+ * Copyright (C) 2013,2014 Renesas Electronics Corporation
+ * Copyright (C) 2014 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/ehci-rmobile.h>
+#include "ehci.h"
+
+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_be32(&ahbcom_pci->usbctr,
+ (DIRPD | PCICLK_MASK | USBH_RST), USBCTR_WIN_SIZE_1GB);
+ clrbits_be32(&ahbcom_pci->usbctr, PLL_RST);
+
+ /* AHB-PCI Bridge Communication Registers */
+ writel(AHB_BUS_CTR_INIT, &ahbcom_pci->ahb_bus_ctr);
+ writel((PHYS_OFFSET & 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(PHYS_OFFSET & 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;
+}
--
1.8.5