| Hans de Goede | 804fa57 | 2015-05-10 14:10:27 +0200 | [diff] [blame] | 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 | if (regs == (void *)(SUNXI_USB1_BASE + 0x400)) { |
| 41 | priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI0; |
| 42 | priv->usb_gate_mask = CCM_USB_CTRL_OHCI0_CLK; |
| 43 | priv->phy_index = 1; |
| 44 | } else { |
| 45 | priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI1; |
| 46 | priv->usb_gate_mask = CCM_USB_CTRL_OHCI1_CLK; |
| 47 | priv->phy_index = 2; |
| 48 | } |
| 49 | |
| 50 | setbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask); |
| 51 | setbits_le32(&ccm->usb_clk_cfg, priv->usb_gate_mask); |
| 52 | #ifdef CONFIG_SUNXI_GEN_SUN6I |
| 53 | setbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask); |
| 54 | #endif |
| 55 | |
| 56 | sunxi_usb_phy_init(priv->phy_index); |
| 57 | sunxi_usb_phy_power_on(priv->phy_index); |
| 58 | |
| 59 | return ohci_register(dev, regs); |
| 60 | } |
| 61 | |
| 62 | static int ohci_usb_remove(struct udevice *dev) |
| 63 | { |
| 64 | struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; |
| 65 | struct ohci_sunxi_priv *priv = dev_get_priv(dev); |
| 66 | int ret; |
| 67 | |
| 68 | ret = ohci_deregister(dev); |
| 69 | if (ret) |
| 70 | return ret; |
| 71 | |
| 72 | sunxi_usb_phy_power_off(priv->phy_index); |
| 73 | sunxi_usb_phy_exit(priv->phy_index); |
| 74 | |
| 75 | #ifdef CONFIG_SUNXI_GEN_SUN6I |
| 76 | clrbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask); |
| 77 | #endif |
| 78 | clrbits_le32(&ccm->usb_clk_cfg, priv->usb_gate_mask); |
| 79 | clrbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask); |
| 80 | |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | static const struct udevice_id ohci_usb_ids[] = { |
| 85 | { .compatible = "allwinner,sun4i-a10-ohci", }, |
| 86 | { .compatible = "allwinner,sun5i-a13-ohci", }, |
| 87 | { .compatible = "allwinner,sun6i-a31-ohci", }, |
| 88 | { .compatible = "allwinner,sun7i-a20-ohci", }, |
| 89 | { .compatible = "allwinner,sun8i-a23-ohci", }, |
| 90 | { .compatible = "allwinner,sun9i-a80-ohci", }, |
| 91 | { } |
| 92 | }; |
| 93 | |
| 94 | U_BOOT_DRIVER(usb_ohci) = { |
| 95 | .name = "ohci_sunxi", |
| 96 | .id = UCLASS_USB, |
| 97 | .of_match = ohci_usb_ids, |
| 98 | .probe = ohci_usb_probe, |
| 99 | .remove = ohci_usb_remove, |
| 100 | .ops = &ohci_usb_ops, |
| 101 | .platdata_auto_alloc_size = sizeof(struct usb_platdata), |
| 102 | .priv_auto_alloc_size = sizeof(struct ohci_sunxi_priv), |
| 103 | .flags = DM_FLAG_ALLOC_PRIV_DMA, |
| 104 | }; |