| 1 | /* |
| 2 | * arch/ubicom32/mach-common/vdc_tio.c |
| 3 | * Generic initialization for VDC |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * |
| 7 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 8 | * |
| 9 | * The Ubicom32 Linux Kernel Port is free software: you can redistribute |
| 10 | * it and/or modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation, either version 2 of the |
| 12 | * License, or (at your option) any later version. |
| 13 | * |
| 14 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 15 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 16 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 21 | * see <http://www.gnu.org/licenses/>. |
| 22 | * |
| 23 | * Ubicom32 implementation derived from (with many thanks): |
| 24 | * arch/m68knommu |
| 25 | * arch/blackfin |
| 26 | * arch/parisc |
| 27 | */ |
| 28 | |
| 29 | #include <linux/platform_device.h> |
| 30 | #include <linux/types.h> |
| 31 | |
| 32 | #include <asm/devtree.h> |
| 33 | #include <asm/vdc_tio.h> |
| 34 | |
| 35 | /* |
| 36 | * Resources that this driver uses |
| 37 | */ |
| 38 | static struct resource vdc_tio_resources[] = { |
| 39 | /* |
| 40 | * Send IRQ |
| 41 | */ |
| 42 | [0] = { |
| 43 | /* |
| 44 | * The init routine will query the devtree and fill this in |
| 45 | */ |
| 46 | .flags = IORESOURCE_IRQ, |
| 47 | }, |
| 48 | |
| 49 | /* |
| 50 | * Receive IRQ (optional) |
| 51 | */ |
| 52 | [1] = { |
| 53 | /* |
| 54 | * The init routine will query the devtree and fill this in |
| 55 | */ |
| 56 | .flags = IORESOURCE_IRQ, |
| 57 | }, |
| 58 | |
| 59 | /* |
| 60 | * Memory Mapped Registers |
| 61 | */ |
| 62 | [2] = { |
| 63 | /* |
| 64 | * The init routine will query the devtree and fill this in |
| 65 | */ |
| 66 | .flags = IORESOURCE_MEM, |
| 67 | }, |
| 68 | }; |
| 69 | |
| 70 | /* |
| 71 | * The platform_device structure which is passed to the driver |
| 72 | */ |
| 73 | static struct platform_device vdc_tio_platform_device = { |
| 74 | .name = "ubicom32fb", |
| 75 | .id = -1, |
| 76 | .resource = vdc_tio_resources, |
| 77 | .num_resources = ARRAY_SIZE(vdc_tio_resources), |
| 78 | }; |
| 79 | |
| 80 | /* |
| 81 | * vdc_tio_init |
| 82 | * Checks the device tree and instantiates the driver if found |
| 83 | */ |
| 84 | void __init vdc_tio_init(void) |
| 85 | { |
| 86 | /* |
| 87 | * Check the device tree for the vdc_tio |
| 88 | */ |
| 89 | struct vdc_tio_node *vdc_node = |
| 90 | (struct vdc_tio_node *)devtree_find_node("vdctio"); |
| 91 | if (!vdc_node) { |
| 92 | printk(KERN_WARNING "No vdc_tio found\n"); |
| 93 | return; |
| 94 | } |
| 95 | |
| 96 | /* |
| 97 | * Fill in the resources and platform data from devtree information |
| 98 | */ |
| 99 | vdc_tio_resources[0].start = vdc_node->dn.sendirq; |
| 100 | vdc_tio_resources[1].start = vdc_node->dn.recvirq; |
| 101 | vdc_tio_resources[2].start = (u32_t)vdc_node->regs; |
| 102 | vdc_tio_resources[2].end = (u32_t)vdc_node->regs + |
| 103 | sizeof(struct vdc_tio_vp_regs); |
| 104 | |
| 105 | /* |
| 106 | * Try to get the device registered |
| 107 | */ |
| 108 | if (platform_device_register(&vdc_tio_platform_device) < 0) { |
| 109 | printk(KERN_WARNING "VDC failed to register\n"); |
| 110 | } |
| 111 | } |
| 112 | |
