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 struct ohci_sunxi_priv { 21 ohci_t ohci; 22 int ahb_gate_mask; /* Mask of ahb_gate0 clk gate bits for this hcd */ 23 int usb_gate_mask; /* Mask of usb_clk_cfg clk gate bits for this hcd */ 24 int phy_index; /* Index of the usb-phy attached to this hcd */ 25 }; 26 27 static int ohci_usb_probe(struct udevice *dev) 28 { 29 struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; 30 struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev); 31 struct ohci_sunxi_priv *priv = dev_get_priv(dev); 32 struct ohci_regs *regs = (struct ohci_regs *)dev_get_addr(dev); 33 34 bus_priv->companion = true; 35 36 /* 37 * This should go away once we've moved to the driver model for 38 * clocks resp. phys. 39 */ 40 priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI0; 41 #ifdef CONFIG_MACH_SUN8I_H3 42 priv->ahb_gate_mask |= 1 << AHB_GATE_OFFSET_USB_EHCI0; 43 #endif 44 priv->usb_gate_mask = CCM_USB_CTRL_OHCI0_CLK; 45 priv->phy_index = ((u32)regs - (SUNXI_USB1_BASE + 0x400)) / 0x1000 + 1; 46 priv->ahb_gate_mask <<= priv->phy_index - 1; 47 priv->usb_gate_mask <<= priv->phy_index - 1; 48 49 setbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask); 50 setbits_le32(&ccm->usb_clk_cfg, priv->usb_gate_mask); 51 #ifdef CONFIG_SUNXI_GEN_SUN6I 52 setbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask); 53 #endif 54 55 sunxi_usb_phy_init(priv->phy_index); 56 sunxi_usb_phy_power_on(priv->phy_index); 57 58 return ohci_register(dev, regs); 59 } 60 61 static int ohci_usb_remove(struct udevice *dev) 62 { 63 struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; 64 struct ohci_sunxi_priv *priv = dev_get_priv(dev); 65 int ret; 66 67 ret = ohci_deregister(dev); 68 if (ret) 69 return ret; 70 71 sunxi_usb_phy_exit(priv->phy_index); 72 73 #ifdef CONFIG_SUNXI_GEN_SUN6I 74 clrbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask); 75 #endif 76 clrbits_le32(&ccm->usb_clk_cfg, priv->usb_gate_mask); 77 clrbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask); 78 79 return 0; 80 } 81 82 static const struct udevice_id ohci_usb_ids[] = { 83 { .compatible = "allwinner,sun4i-a10-ohci", }, 84 { .compatible = "allwinner,sun5i-a13-ohci", }, 85 { .compatible = "allwinner,sun6i-a31-ohci", }, 86 { .compatible = "allwinner,sun7i-a20-ohci", }, 87 { .compatible = "allwinner,sun8i-a23-ohci", }, 88 { .compatible = "allwinner,sun8i-h3-ohci", }, 89 { .compatible = "allwinner,sun9i-a80-ohci", }, 90 { } 91 }; 92 93 U_BOOT_DRIVER(usb_ohci) = { 94 .name = "ohci_sunxi", 95 .id = UCLASS_USB, 96 .of_match = ohci_usb_ids, 97 .probe = ohci_usb_probe, 98 .remove = ohci_usb_remove, 99 .ops = &ohci_usb_ops, 100 .platdata_auto_alloc_size = sizeof(struct usb_platdata), 101 .priv_auto_alloc_size = sizeof(struct ohci_sunxi_priv), 102 .flags = DM_FLAG_ALLOC_PRIV_DMA, 103 }; 104