1 /* 2 * Sunxi ohci glue 3 * 4 * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com> 5 * 6 * Based on code from 7 * Allwinner Technology Co., Ltd. <www.allwinnertech.com> 8 * 9 * SPDX-License-Identifier: GPL-2.0+ 10 */ 11 12 #include <common.h> 13 #include <asm/arch/clock.h> 14 #include <asm/arch/usb_phy.h> 15 #include <asm/io.h> 16 #include <dm.h> 17 #include <usb.h> 18 #include "ohci.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 ohci_sunxi_priv { 29 ohci_t ohci; 30 int ahb_gate_mask; /* Mask of ahb_gate0 clk gate bits for this hcd */ 31 int usb_gate_mask; /* Mask of usb_clk_cfg clk gate bits for this hcd */ 32 int phy_index; /* Index of the usb-phy attached to this hcd */ 33 }; 34 35 static int ohci_usb_probe(struct udevice *dev) 36 { 37 struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; 38 struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev); 39 struct ohci_sunxi_priv *priv = dev_get_priv(dev); 40 struct ohci_regs *regs = (struct ohci_regs *)dev_get_addr(dev); 41 int extra_ahb_gate_mask = 0; 42 43 bus_priv->companion = true; 44 45 /* 46 * This should go away once we've moved to the driver model for 47 * clocks resp. phys. 48 */ 49 priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI0; 50 #ifdef CONFIG_MACH_SUN8I_H3 51 extra_ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0; 52 #endif 53 priv->usb_gate_mask = CCM_USB_CTRL_OHCI0_CLK; 54 priv->phy_index = ((u32)regs - (SUNXI_USB1_BASE + 0x400)) / BASE_DIST; 55 priv->ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST; 56 extra_ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST; 57 priv->usb_gate_mask <<= priv->phy_index; 58 priv->phy_index++; /* Non otg phys start at 1 */ 59 60 setbits_le32(&ccm->ahb_gate0, 61 priv->ahb_gate_mask | extra_ahb_gate_mask); 62 setbits_le32(&ccm->usb_clk_cfg, priv->usb_gate_mask); 63 #ifdef CONFIG_SUNXI_GEN_SUN6I 64 setbits_le32(&ccm->ahb_reset0_cfg, 65 priv->ahb_gate_mask | extra_ahb_gate_mask); 66 #endif 67 68 sunxi_usb_phy_init(priv->phy_index); 69 sunxi_usb_phy_power_on(priv->phy_index); 70 71 return ohci_register(dev, regs); 72 } 73 74 static int ohci_usb_remove(struct udevice *dev) 75 { 76 struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; 77 struct ohci_sunxi_priv *priv = dev_get_priv(dev); 78 int ret; 79 80 ret = ohci_deregister(dev); 81 if (ret) 82 return ret; 83 84 sunxi_usb_phy_exit(priv->phy_index); 85 86 #ifdef CONFIG_SUNXI_GEN_SUN6I 87 clrbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask); 88 #endif 89 clrbits_le32(&ccm->usb_clk_cfg, priv->usb_gate_mask); 90 clrbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask); 91 92 return 0; 93 } 94 95 static const struct udevice_id ohci_usb_ids[] = { 96 { .compatible = "allwinner,sun4i-a10-ohci", }, 97 { .compatible = "allwinner,sun5i-a13-ohci", }, 98 { .compatible = "allwinner,sun6i-a31-ohci", }, 99 { .compatible = "allwinner,sun7i-a20-ohci", }, 100 { .compatible = "allwinner,sun8i-a23-ohci", }, 101 { .compatible = "allwinner,sun8i-a83t-ohci", }, 102 { .compatible = "allwinner,sun8i-h3-ohci", }, 103 { .compatible = "allwinner,sun9i-a80-ohci", }, 104 { } 105 }; 106 107 U_BOOT_DRIVER(usb_ohci) = { 108 .name = "ohci_sunxi", 109 .id = UCLASS_USB, 110 .of_match = ohci_usb_ids, 111 .probe = ohci_usb_probe, 112 .remove = ohci_usb_remove, 113 .ops = &ohci_usb_ops, 114 .platdata_auto_alloc_size = sizeof(struct usb_platdata), 115 .priv_auto_alloc_size = sizeof(struct ohci_sunxi_priv), 116 .flags = DM_FLAG_ALLOC_PRIV_DMA, 117 }; 118