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 <dm.h> 18 #include "ehci.h" 19 20 #ifdef CONFIG_SUNXI_GEN_SUN4I 21 #define BASE_DIST 0x8000 22 #define AHB_CLK_DIST 2 23 #else 24 #define BASE_DIST 0x1000 25 #define AHB_CLK_DIST 1 26 #endif 27 28 struct ehci_sunxi_priv { 29 struct ehci_ctrl ehci; 30 int ahb_gate_mask; /* Mask of ahb_gate0 clk gate bits for this hcd */ 31 int phy_index; /* Index of the usb-phy attached to this hcd */ 32 }; 33 34 static int ehci_usb_probe(struct udevice *dev) 35 { 36 struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; 37 struct usb_platdata *plat = dev_get_platdata(dev); 38 struct ehci_sunxi_priv *priv = dev_get_priv(dev); 39 struct ehci_hccr *hccr = (struct ehci_hccr *)dev_get_addr(dev); 40 struct ehci_hcor *hcor; 41 42 /* 43 * This should go away once we've moved to the driver model for 44 * clocks resp. phys. 45 */ 46 priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0; 47 #ifdef CONFIG_MACH_SUN8I_H3 48 priv->ahb_gate_mask |= 1 << AHB_GATE_OFFSET_USB_OHCI0; 49 #endif 50 priv->phy_index = ((u32)hccr - SUNXI_USB1_BASE) / BASE_DIST; 51 priv->ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST; 52 priv->phy_index++; /* Non otg phys start at 1 */ 53 54 setbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask); 55 #ifdef CONFIG_SUNXI_GEN_SUN6I 56 setbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask); 57 #endif 58 59 sunxi_usb_phy_init(priv->phy_index); 60 sunxi_usb_phy_power_on(priv->phy_index); 61 62 hcor = (struct ehci_hcor *)((uint32_t)hccr + 63 HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 64 65 return ehci_register(dev, hccr, hcor, NULL, 0, plat->init_type); 66 } 67 68 static int ehci_usb_remove(struct udevice *dev) 69 { 70 struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; 71 struct ehci_sunxi_priv *priv = dev_get_priv(dev); 72 int ret; 73 74 ret = ehci_deregister(dev); 75 if (ret) 76 return ret; 77 78 sunxi_usb_phy_exit(priv->phy_index); 79 80 #ifdef CONFIG_SUNXI_GEN_SUN6I 81 clrbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask); 82 #endif 83 clrbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask); 84 85 return 0; 86 } 87 88 static const struct udevice_id ehci_usb_ids[] = { 89 { .compatible = "allwinner,sun4i-a10-ehci", }, 90 { .compatible = "allwinner,sun5i-a13-ehci", }, 91 { .compatible = "allwinner,sun6i-a31-ehci", }, 92 { .compatible = "allwinner,sun7i-a20-ehci", }, 93 { .compatible = "allwinner,sun8i-a23-ehci", }, 94 { .compatible = "allwinner,sun8i-a83t-ehci", }, 95 { .compatible = "allwinner,sun8i-h3-ehci", }, 96 { .compatible = "allwinner,sun9i-a80-ehci", }, 97 { } 98 }; 99 100 U_BOOT_DRIVER(ehci_sunxi) = { 101 .name = "ehci_sunxi", 102 .id = UCLASS_USB, 103 .of_match = ehci_usb_ids, 104 .probe = ehci_usb_probe, 105 .remove = ehci_usb_remove, 106 .ops = &ehci_usb_ops, 107 .platdata_auto_alloc_size = sizeof(struct usb_platdata), 108 .priv_auto_alloc_size = sizeof(struct ehci_sunxi_priv), 109 .flags = DM_FLAG_ALLOC_PRIV_DMA, 110 }; 111