drivers/usb/host/ehci-sunxi.c

   1 /*
   2  * Sunxi ehci glue
   3  *
   4  * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
   5  * Copyright (C) 2014 Roman Byshko <rbyshko@gmail.com>
   6  *
   7  * Based on code from
   8  * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
   9  *
  10  * SPDX-License-Identifier:     GPL-2.0+
  11  */
  12
  13 #include <common.h>
  14 #include <asm/arch/clock.h>
  15 #include <asm/arch/usb_phy.h>
  16 #include <asm/io.h>
  17 #include "ehci.h"
  18
  19 int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
  20                 struct ehci_hcor **hcor)
  21 {
  22         struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
  23         int ahb_gate_offset, err;
  24
  25         err = sunxi_usb_phy_probe(index + 1);
  26         if (err)
  27                 return err;
  28
  29         ahb_gate_offset = index ? AHB_GATE_OFFSET_USB_EHCI1 :
  30                                   AHB_GATE_OFFSET_USB_EHCI0;
  31         setbits_le32(&ccm->ahb_gate0, 1 << ahb_gate_offset);
  32 #ifdef CONFIG_SUNXI_GEN_SUN6I
  33         setbits_le32(&ccm->ahb_reset0_cfg, 1 << ahb_gate_offset);
  34 #endif
  35
  36         sunxi_usb_phy_init(index + 1);
  37         sunxi_usb_phy_power_on(index + 1);
  38
  39         if (index == 0)
  40                 *hccr = (void *)SUNXI_USB1_BASE;
  41         else
  42                 *hccr = (void *)SUNXI_USB2_BASE;
  43
  44         *hcor = (struct ehci_hcor *)((uint32_t) *hccr
  45                                 + HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
  46
  47         debug("sunxi-ehci: init hccr %x and hcor %x hc_length %d\n",
  48               (uint32_t)*hccr, (uint32_t)*hcor,
  49               (uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
  50
  51         return 0;
  52 }
  53
  54 int ehci_hcd_stop(int index)
  55 {
  56         struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
  57         int ahb_gate_offset;
  58
  59         sunxi_usb_phy_power_off(index + 1);
  60         sunxi_usb_phy_exit(index + 1);
  61
  62         ahb_gate_offset = index ? AHB_GATE_OFFSET_USB_EHCI1 :
  63                                   AHB_GATE_OFFSET_USB_EHCI0;
  64 #ifdef CONFIG_SUNXI_GEN_SUN6I
  65         clrbits_le32(&ccm->ahb_reset0_cfg, 1 << ahb_gate_offset);
  66 #endif
  67         clrbits_le32(&ccm->ahb_gate0, 1 << ahb_gate_offset);
  68
  69         return sunxi_usb_phy_remove(index + 1);
  70 }