| /* |
| * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> |
| * Copyright (C) 2010 Freescale Semiconductor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| */ |
| |
| #include <linux/platform_device.h> |
| #include <linux/io.h> |
| |
| #include <mach/hardware.h> |
| #include <mach/mxc_ehci.h> |
| |
| #define USBCTRL_OTGBASE_OFFSET 0x600 |
| |
| #define MX31_OTG_SIC_SHIFT 29 |
| #define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT) |
| #define MX31_OTG_PM_BIT (1 << 24) |
| |
| #define MX31_H2_SIC_SHIFT 21 |
| #define MX31_H2_SIC_MASK (0x3 << MX31_H2_SIC_SHIFT) |
| #define MX31_H2_PM_BIT (1 << 16) |
| #define MX31_H2_DT_BIT (1 << 5) |
| |
| #define MX31_H1_SIC_SHIFT 13 |
| #define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT) |
| #define MX31_H1_PM_BIT (1 << 8) |
| #define MX31_H1_DT_BIT (1 << 4) |
| |
| #define MX35_OTG_SIC_SHIFT 29 |
| #define MX35_OTG_SIC_MASK (0x3 << MX35_OTG_SIC_SHIFT) |
| #define MX35_OTG_PM_BIT (1 << 24) |
| |
| #define MX35_H1_SIC_SHIFT 21 |
| #define MX35_H1_SIC_MASK (0x3 << MX35_H1_SIC_SHIFT) |
| #define MX35_H1_PM_BIT (1 << 8) |
| #define MX35_H1_IPPUE_UP_BIT (1 << 7) |
| #define MX35_H1_IPPUE_DOWN_BIT (1 << 6) |
| #define MX35_H1_TLL_BIT (1 << 5) |
| #define MX35_H1_USBTE_BIT (1 << 4) |
| |
| #define MXC_OTG_OFFSET 0 |
| #define MXC_H1_OFFSET 0x200 |
| |
| /* USB_CTRL */ |
| #define MXC_OTG_UCTRL_OWIE_BIT (1 << 27) /* OTG wakeup intr enable */ |
| #define MXC_OTG_UCTRL_OPM_BIT (1 << 24) /* OTG power mask */ |
| #define MXC_H1_UCTRL_H1UIE_BIT (1 << 12) /* Host1 ULPI interrupt enable */ |
| #define MXC_H1_UCTRL_H1WIE_BIT (1 << 11) /* HOST1 wakeup intr enable */ |
| #define MXC_H1_UCTRL_H1PM_BIT (1 << 8) /* HOST1 power mask */ |
| |
| /* USB_PHY_CTRL_FUNC */ |
| #define MXC_OTG_PHYCTRL_OC_DIS_BIT (1 << 8) /* OTG Disable Overcurrent Event */ |
| #define MXC_H1_OC_DIS_BIT (1 << 5) /* UH1 Disable Overcurrent Event */ |
| |
| #define MXC_USBCMD_OFFSET 0x140 |
| |
| /* USBCMD */ |
| #define MXC_UCMD_ITC_NO_THRESHOLD_MASK (~(0xff << 16)) /* Interrupt Threshold Control */ |
| |
| int mxc_initialize_usb_hw(int port, unsigned int flags) |
| { |
| unsigned int v; |
| #if defined(CONFIG_ARCH_MX25) |
| if (cpu_is_mx25()) { |
| v = readl(MX25_IO_ADDRESS(MX25_OTG_BASE_ADDR + |
| USBCTRL_OTGBASE_OFFSET)); |
| |
| switch (port) { |
| case 0: /* OTG port */ |
| v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX35_OTG_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX35_OTG_PM_BIT; |
| |
| break; |
| case 1: /* H1 port */ |
| v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_TLL_BIT | |
| MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX35_H1_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX35_H1_PM_BIT; |
| |
| if (!(flags & MXC_EHCI_TTL_ENABLED)) |
| v |= MX35_H1_TLL_BIT; |
| |
| if (flags & MXC_EHCI_INTERNAL_PHY) |
| v |= MX35_H1_USBTE_BIT; |
| |
| if (flags & MXC_EHCI_IPPUE_DOWN) |
| v |= MX35_H1_IPPUE_DOWN_BIT; |
| |
| if (flags & MXC_EHCI_IPPUE_UP) |
| v |= MX35_H1_IPPUE_UP_BIT; |
| |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| writel(v, MX25_IO_ADDRESS(MX25_OTG_BASE_ADDR + |
| USBCTRL_OTGBASE_OFFSET)); |
| return 0; |
| } |
| #endif /* CONFIG_ARCH_MX25 */ |
| #if defined(CONFIG_ARCH_MX3) |
| if (cpu_is_mx31()) { |
| v = readl(MX31_IO_ADDRESS(MX31_OTG_BASE_ADDR + |
| USBCTRL_OTGBASE_OFFSET)); |
| |
| switch (port) { |
| case 0: /* OTG port */ |
| v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX31_OTG_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX31_OTG_PM_BIT; |
| |
| break; |
| case 1: /* H1 port */ |
| v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX31_H1_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX31_H1_PM_BIT; |
| |
| if (!(flags & MXC_EHCI_TTL_ENABLED)) |
| v |= MX31_H1_DT_BIT; |
| |
| break; |
| case 2: /* H2 port */ |
| v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX31_H2_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX31_H2_PM_BIT; |
| |
| if (!(flags & MXC_EHCI_TTL_ENABLED)) |
| v |= MX31_H2_DT_BIT; |
| |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| writel(v, MX31_IO_ADDRESS(MX31_OTG_BASE_ADDR + |
| USBCTRL_OTGBASE_OFFSET)); |
| return 0; |
| } |
| |
| if (cpu_is_mx35()) { |
| v = readl(MX35_IO_ADDRESS(MX35_OTG_BASE_ADDR + |
| USBCTRL_OTGBASE_OFFSET)); |
| |
| switch (port) { |
| case 0: /* OTG port */ |
| v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX35_OTG_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX35_OTG_PM_BIT; |
| |
| break; |
| case 1: /* H1 port */ |
| v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_TLL_BIT | |
| MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX35_H1_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX35_H1_PM_BIT; |
| |
| if (!(flags & MXC_EHCI_TTL_ENABLED)) |
| v |= MX35_H1_TLL_BIT; |
| |
| if (flags & MXC_EHCI_INTERNAL_PHY) |
| v |= MX35_H1_USBTE_BIT; |
| |
| if (flags & MXC_EHCI_IPPUE_DOWN) |
| v |= MX35_H1_IPPUE_DOWN_BIT; |
| |
| if (flags & MXC_EHCI_IPPUE_UP) |
| v |= MX35_H1_IPPUE_UP_BIT; |
| |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| writel(v, MX35_IO_ADDRESS(MX35_OTG_BASE_ADDR + |
| USBCTRL_OTGBASE_OFFSET)); |
| return 0; |
| } |
| #endif /* CONFIG_ARCH_MX3 */ |
| #ifdef CONFIG_MACH_MX27 |
| if (cpu_is_mx27()) { |
| /* On i.MX27 we can use the i.MX31 USBCTRL bits, they |
| * are identical |
| */ |
| v = readl(MX27_IO_ADDRESS(MX27_OTG_BASE_ADDR + |
| USBCTRL_OTGBASE_OFFSET)); |
| switch (port) { |
| case 0: /* OTG port */ |
| v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX31_OTG_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX31_OTG_PM_BIT; |
| break; |
| case 1: /* H1 port */ |
| v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX31_H1_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX31_H1_PM_BIT; |
| |
| if (!(flags & MXC_EHCI_TTL_ENABLED)) |
| v |= MX31_H1_DT_BIT; |
| |
| break; |
| case 2: /* H2 port */ |
| v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT); |
| v |= (flags & MXC_EHCI_INTERFACE_MASK) |
| << MX31_H2_SIC_SHIFT; |
| if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| v |= MX31_H2_PM_BIT; |
| |
| if (!(flags & MXC_EHCI_TTL_ENABLED)) |
| v |= MX31_H2_DT_BIT; |
| |
| break; |
| default: |
| return -EINVAL; |
| } |
| writel(v, MX27_IO_ADDRESS(MX27_OTG_BASE_ADDR + |
| USBCTRL_OTGBASE_OFFSET)); |
| return 0; |
| } |
| #endif /* CONFIG_MACH_MX27 */ |
| #ifdef CONFIG_ARCH_MX51 |
| if (cpu_is_mx51()) { |
| void __iomem *usb_base; |
| u32 usbotg_base; |
| u32 usbother_base; |
| int ret = 0; |
| |
| usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K); |
| |
| switch (port) { |
| case 0: /* OTG port */ |
| usbotg_base = usb_base + MXC_OTG_OFFSET; |
| break; |
| case 1: /* Host 1 port */ |
| usbotg_base = usb_base + MXC_H1_OFFSET; |
| break; |
| default: |
| printk(KERN_ERR"%s no such port %d\n", __func__, port); |
| ret = -ENOENT; |
| goto error; |
| } |
| usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET; |
| |
| switch (port) { |
| case 0: /*OTG port */ |
| if (flags & MXC_EHCI_INTERNAL_PHY) { |
| v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET); |
| |
| if (flags & MXC_EHCI_POWER_PINS_ENABLED) |
| v |= (MXC_OTG_PHYCTRL_OC_DIS_BIT | MXC_OTG_UCTRL_OPM_BIT); /* OC/USBPWR is not used */ |
| else |
| v &= ~(MXC_OTG_PHYCTRL_OC_DIS_BIT | MXC_OTG_UCTRL_OPM_BIT); /* OC/USBPWR is used */ |
| __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET); |
| |
| v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET); |
| if (flags & MXC_EHCI_WAKEUP_ENABLED) |
| v |= MXC_OTG_UCTRL_OWIE_BIT;/* OTG wakeup enable */ |
| else |
| v &= ~MXC_OTG_UCTRL_OWIE_BIT;/* OTG wakeup disable */ |
| __raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET); |
| } |
| break; |
| case 1: /* Host 1 */ |
| /*Host ULPI */ |
| v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET); |
| if (flags & MXC_EHCI_WAKEUP_ENABLED) |
| v &= ~(MXC_H1_UCTRL_H1WIE_BIT | MXC_H1_UCTRL_H1UIE_BIT);/* HOST1 wakeup/ULPI intr disable */ |
| else |
| v &= ~(MXC_H1_UCTRL_H1WIE_BIT | MXC_H1_UCTRL_H1UIE_BIT);/* HOST1 wakeup/ULPI intr disable */ |
| |
| if (flags & MXC_EHCI_POWER_PINS_ENABLED) |
| v &= ~MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used*/ |
| else |
| v |= MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used*/ |
| __raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET); |
| |
| v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET); |
| if (flags & MXC_EHCI_POWER_PINS_ENABLED) |
| v &= ~MXC_H1_OC_DIS_BIT; /* OC is used */ |
| else |
| v |= MXC_H1_OC_DIS_BIT; /* OC is not used */ |
| __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET); |
| |
| v = __raw_readl(usbotg_base + MXC_USBCMD_OFFSET); |
| if (flags & MXC_EHCI_ITC_NO_THRESHOLD) |
| /* Interrupt Threshold Control:Immediate (no threshold) */ |
| v &= MXC_UCMD_ITC_NO_THRESHOLD_MASK; |
| __raw_writel(v, usbotg_base + MXC_USBCMD_OFFSET); |
| break; |
| } |
| |
| error: |
| iounmap(usb_base); |
| return ret; |
| } |
| #endif |
| printk(KERN_WARNING |
| "%s() unable to setup USBCONTROL for this CPU\n", __func__); |
| return -EINVAL; |
| } |
| EXPORT_SYMBOL(mxc_initialize_usb_hw); |
| |