LXR uboot/drivers/usb/host/ehci-spear.c

   1/*
   2 * (C) Copyright 2010
   3 * Armando Visconti, ST Micoelectronics, <armando.visconti@st.com>.
   4 *
   5 * (C) Copyright 2009
   6 * Marvell Semiconductor <www.marvell.com>
   7 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
   8 *
   9 * SPDX-License-Identifier:     GPL-2.0+
  10 */
  11
  12#include <common.h>
  13#include <asm/io.h>
  14#include <usb.h>
  15#include "ehci.h"
  16#include <asm/arch/hardware.h>
  17#include <asm/arch/spr_misc.h>
  18
  19static void spear6xx_usbh_stop(void)
  20{
  21        struct misc_regs *const misc_p =
  22            (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
  23        u32 periph1_rst = readl(misc_p->periph1_rst);
  24
  25        periph1_rst |= PERIPH_USBH1 | PERIPH_USBH2;
  26        writel(periph1_rst, misc_p->periph1_rst);
  27
  28        udelay(1000);
  29        periph1_rst &= ~(PERIPH_USBH1 | PERIPH_USBH2);
  30        writel(periph1_rst, misc_p->periph1_rst);
  31}
  32
  33/*
  34 * Create the appropriate control structures to manage
  35 * a new EHCI host controller.
  36 */
  37int ehci_hcd_init(int index, enum usb_init_type init,
  38                struct ehci_hccr **hccr, struct ehci_hcor **hcor)
  39{
  40        u32 ehci = 0;
  41
  42        switch (index) {
  43        case 0:
  44                ehci = CONFIG_SYS_UHC0_EHCI_BASE;
  45                break;
  46        case 1:
  47                ehci = CONFIG_SYS_UHC1_EHCI_BASE;
  48                break;
  49        default:
  50                printf("ERROR: wrong controller index!\n");
  51                break;
  52        };
  53
  54        *hccr = (struct ehci_hccr *)(ehci + 0x100);
  55        *hcor = (struct ehci_hcor *)((uint32_t) *hccr +
  56                        HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
  57
  58        debug("SPEAr-ehci: init hccr %x and hcor %x hc_length %d\n",
  59                (uint32_t)*hccr, (uint32_t)*hcor,
  60                (uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
  61
  62        return 0;
  63}
  64
  65/*
  66 * Destroy the appropriate control structures corresponding
  67 * the the EHCI host controller.
  68 */
  69int ehci_hcd_stop(int index)
  70{
  71#if defined(CONFIG_SPEAR600)
  72        spear6xx_usbh_stop();
  73#endif
  74
  75        return 0;
  76}
  77