| 1 | /* |
| 2 | * arch/ubicom32/mach-common/ip5k_usb.c |
| 3 | * Ubicom32 architecture usb support. |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com> |
| 7 | * Author: Kevin Hilman |
| 8 | * |
| 9 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 10 | * |
| 11 | * The Ubicom32 Linux Kernel Port is free software: you can |
| 12 | * redistribute it and/or modify it under the terms of the GNU General |
| 13 | * Public License as published by the Free Software Foundation, either |
| 14 | * version 2 of the License, or (at your option) any later version. |
| 15 | * |
| 16 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 17 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 18 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 19 | * See the GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 23 | * see <http://www.gnu.org/licenses/>. |
| 24 | * |
| 25 | * Ubicom32 implementation derived from (with many thanks): |
| 26 | * arch/m68knommu |
| 27 | * arch/blackfin |
| 28 | * arch/parisc |
| 29 | */ |
| 30 | |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/errno.h> |
| 33 | #include <linux/delay.h> |
| 34 | #include <linux/platform_device.h> |
| 35 | #include <linux/dma-mapping.h> |
| 36 | #include <linux/usb/musb.h> |
| 37 | #include <asm/devtree.h> |
| 38 | #include <asm/ip5000.h> |
| 39 | #include "usb_tio.h" |
| 40 | |
| 41 | struct usbtionode *unode = NULL; |
| 42 | |
| 43 | static struct resource usb_resources[] = { |
| 44 | [0] = { |
| 45 | .start = RJ + 0x800, |
| 46 | .end = RJ + 0x1000, |
| 47 | .flags = IORESOURCE_MEM, |
| 48 | }, |
| 49 | [1] = { /* general IRQ */ |
| 50 | .start = 1, /* this is a dummy value, the real irq number is passed from kernel_setup_param */ |
| 51 | .flags = IORESOURCE_IRQ, |
| 52 | }, |
| 53 | }; |
| 54 | |
| 55 | |
| 56 | static struct musb_hdrc_eps_bits musb_eps[] = { |
| 57 | { "ep1_tx", 4, }, |
| 58 | { "ep1_rx", 4, }, |
| 59 | { "ep2_tx", 10, }, |
| 60 | { "ep2_rx", 10, }, |
| 61 | { "ep3_tx", 9, }, |
| 62 | { "ep3_rx", 9, }, |
| 63 | { "ep4_tx", 9, }, |
| 64 | { "ep4_rx", 9, }, |
| 65 | { "ep5_tx", 6, }, |
| 66 | { "ep5_rx", 6, }, |
| 67 | }; |
| 68 | |
| 69 | static struct musb_hdrc_config musb_config = { |
| 70 | .multipoint = true, |
| 71 | .dyn_fifo = false, |
| 72 | .soft_con = true, |
| 73 | .dma = false, |
| 74 | |
| 75 | .num_eps = 6, |
| 76 | .dma_channels = 0, |
| 77 | .ram_bits = 0, |
| 78 | .eps_bits = musb_eps, |
| 79 | }; |
| 80 | |
| 81 | static struct musb_hdrc_platform_data usb_data = { |
| 82 | #ifdef CONFIG_USB_MUSB_OTG |
| 83 | .mode = MUSB_OTG, |
| 84 | #else |
| 85 | #ifdef CONFIG_USB_MUSB_HDRC_HCD |
| 86 | .mode = MUSB_HOST, |
| 87 | #else |
| 88 | #ifdef CONFIG_USB_GADGET_MUSB_HDRC |
| 89 | .mode = MUSB_PERIPHERAL, |
| 90 | #endif |
| 91 | #endif |
| 92 | #endif |
| 93 | .clock = NULL, |
| 94 | .set_clock = NULL, |
| 95 | .config = &musb_config, |
| 96 | }; |
| 97 | |
| 98 | static struct platform_device musb_device = { |
| 99 | .name = "musb_hdrc", |
| 100 | .id = 0, |
| 101 | .dev = { |
| 102 | .platform_data = &usb_data, |
| 103 | .dma_mask = NULL, |
| 104 | .coherent_dma_mask = 0, |
| 105 | }, |
| 106 | .resource = usb_resources, |
| 107 | .num_resources = ARRAY_SIZE(usb_resources), |
| 108 | }; |
| 109 | |
| 110 | struct usbtio_node *usb_node = NULL; |
| 111 | void ubi32_usb_init(void) |
| 112 | { |
| 113 | /* |
| 114 | * See if the usbtio is in the device tree. |
| 115 | */ |
| 116 | usb_node = (struct usbtio_node *)devtree_find_node("usbtio"); |
| 117 | if (!usb_node) { |
| 118 | printk(KERN_WARNING "usb init failed\n"); |
| 119 | return; |
| 120 | } |
| 121 | |
| 122 | usb_resources[1].start = usb_node->dn.recvirq; |
| 123 | if (platform_device_register(&musb_device) < 0) { |
| 124 | printk(KERN_ERR "Unable to register HS-USB (MUSB) device\n"); |
| 125 | return; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | void ubi32_usb_int_clr(void) |
| 130 | { |
| 131 | UBICOM32_IO_PORT(RJ)->int_clr = (1 << 3); |
| 132 | } |
| 133 | |
