103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/*
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* drivers/usb/gadget/dwc2_udc_otg.c
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* Designware DWC2 on-chip full/high speed USB OTG 2.0 device controllers
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*
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* Copyright (C) 2008 for Samsung Electronics
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*
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* BSP Support for Samsung's UDC driver
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* available at:
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* git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
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*
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* State machine bugfixes:
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* Marek Szyprowski <m.szyprowski@samsung.com>
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*
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* Ported to u-boot:
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* Marek Szyprowski <m.szyprowski@samsung.com>
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* Lukasz Majewski <l.majewski@samsumg.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/errno.h>
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#include <linux/list.h>
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#include <malloc.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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#include <asm/byteorder.h>
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#include <asm/unaligned.h>
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#include <asm/io.h>
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#include <asm/mach-types.h>
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#include "dwc2_udc_otg_regs.h"
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#include "dwc2_udc_otg_priv.h"
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#include <usb/lin_gadget_compat.h>
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#include <usb/dwc2_udc.h>
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void otg_phy_init(struct dwc2_udc *dev)
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{
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unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
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struct dwc2_usbotg_phy *phy =
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(struct dwc2_usbotg_phy *)dev->pdata->regs_phy;
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dev->pdata->phy_control(1);
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/* USB PHY0 Enable */
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printf("USB PHY0 Enable\n");
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/* Enable PHY */
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writel(readl(usb_phy_ctrl) | USB_PHY_CTRL_EN0, usb_phy_ctrl);
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if (dev->pdata->usb_flags == PHY0_SLEEP) /* C210 Universal */
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writel((readl(&phy->phypwr)
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&~(PHY_0_SLEEP | OTG_DISABLE_0 | ANALOG_PWRDOWN)
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&~FORCE_SUSPEND_0), &phy->phypwr);
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else /* C110 GONI */
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writel((readl(&phy->phypwr) &~(OTG_DISABLE_0 | ANALOG_PWRDOWN)
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&~FORCE_SUSPEND_0), &phy->phypwr);
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if (s5p_cpu_id == 0x4412)
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writel((readl(&phy->phyclk) & ~(EXYNOS4X12_ID_PULLUP0 |
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EXYNOS4X12_COMMON_ON_N0)) | EXYNOS4X12_CLK_SEL_24MHZ,
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&phy->phyclk); /* PLL 24Mhz */
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else
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writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)) |
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CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */
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writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST))
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| PHY_SW_RST0, &phy->rstcon);
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udelay(10);
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writel(readl(&phy->rstcon)
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&~(PHY_SW_RST0 | LINK_SW_RST | PHYLNK_SW_RST), &phy->rstcon);
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udelay(10);
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}
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void otg_phy_off(struct dwc2_udc *dev)
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{
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unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
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struct dwc2_usbotg_phy *phy =
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(struct dwc2_usbotg_phy *)dev->pdata->regs_phy;
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/* reset controller just in case */
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writel(PHY_SW_RST0, &phy->rstcon);
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udelay(20);
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writel(readl(&phy->phypwr) &~PHY_SW_RST0, &phy->rstcon);
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udelay(20);
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writel(readl(&phy->phypwr) | OTG_DISABLE_0 | ANALOG_PWRDOWN
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| FORCE_SUSPEND_0, &phy->phypwr);
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writel(readl(usb_phy_ctrl) &~USB_PHY_CTRL_EN0, usb_phy_ctrl);
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writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)),
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&phy->phyclk);
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udelay(10000);
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dev->pdata->phy_control(0);
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}
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