Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 1 | /* |
| 2 | * IBM PowerPC IBM eBus Infrastructure Support. |
| 3 | * |
| 4 | * Copyright (c) 2005 IBM Corporation |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 5 | * Joachim Fenkes <fenkes@de.ibm.com> |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 6 | * Heiko J Schick <schickhj@de.ibm.com> |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 7 | * |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 8 | * All rights reserved. |
| 9 | * |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 10 | * This source code is distributed under a dual license of GPL v2.0 and OpenIB |
| 11 | * BSD. |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 12 | * |
| 13 | * OpenIB BSD License |
| 14 | * |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 15 | * Redistribution and use in source and binary forms, with or without |
| 16 | * modification, are permitted provided that the following conditions are met: |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 17 | * |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 18 | * Redistributions of source code must retain the above copyright notice, this |
| 19 | * list of conditions and the following disclaimer. |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 20 | * |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 21 | * Redistributions in binary form must reproduce the above copyright notice, |
| 22 | * this list of conditions and the following disclaimer in the documentation |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 23 | * and/or other materials |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 24 | * provided with the distribution. |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 25 | * |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 27 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 30 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 31 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 32 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 33 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 34 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 35 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 36 | * POSSIBILITY OF SUCH DAMAGE. |
| 37 | */ |
| 38 | |
| 39 | #include <linux/init.h> |
Paul Gortmaker | 66b15db | 2011-05-27 10:46:24 -0400 | [diff] [blame] | 40 | #include <linux/export.h> |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 41 | #include <linux/console.h> |
| 42 | #include <linux/kobject.h> |
| 43 | #include <linux/dma-mapping.h> |
| 44 | #include <linux/interrupt.h> |
Grant Likely | 283029d | 2008-01-09 06:20:40 +1100 | [diff] [blame] | 45 | #include <linux/of.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 46 | #include <linux/slab.h> |
Paul Gortmaker | b56eade | 2011-05-27 13:27:45 -0400 | [diff] [blame] | 47 | #include <linux/stat.h> |
Joachim Fenkes | a988c0a | 2007-09-26 19:44:57 +1000 | [diff] [blame] | 48 | #include <linux/of_platform.h> |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 49 | #include <asm/ibmebus.h> |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 50 | |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 51 | static struct device ibmebus_bus_device = { /* fake "parent" device */ |
Kay Sievers | aab0d37 | 2008-12-04 10:02:56 -0800 | [diff] [blame] | 52 | .init_name = "ibmebus", |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 53 | }; |
| 54 | |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 55 | struct bus_type ibmebus_bus_type; |
| 56 | |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 57 | /* These devices will automatically be added to the bus during init */ |
Uwe Kleine-König | ce6d73c | 2014-09-10 21:56:38 +0200 | [diff] [blame] | 58 | static const struct of_device_id ibmebus_matches[] __initconst = { |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 59 | { .compatible = "IBM,lhca" }, |
| 60 | { .compatible = "IBM,lhea" }, |
| 61 | {}, |
| 62 | }; |
| 63 | |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 64 | static void *ibmebus_alloc_coherent(struct device *dev, |
| 65 | size_t size, |
| 66 | dma_addr_t *dma_handle, |
Andrzej Pietrasiewicz | bfbf7d6 | 2011-12-06 14:14:46 +0100 | [diff] [blame] | 67 | gfp_t flag, |
| 68 | struct dma_attrs *attrs) |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 69 | { |
| 70 | void *mem; |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 71 | |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 72 | mem = kmalloc(size, flag); |
| 73 | *dma_handle = (dma_addr_t)mem; |
| 74 | |
| 75 | return mem; |
| 76 | } |
| 77 | |
| 78 | static void ibmebus_free_coherent(struct device *dev, |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 79 | size_t size, void *vaddr, |
Andrzej Pietrasiewicz | bfbf7d6 | 2011-12-06 14:14:46 +0100 | [diff] [blame] | 80 | dma_addr_t dma_handle, |
| 81 | struct dma_attrs *attrs) |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 82 | { |
| 83 | kfree(vaddr); |
| 84 | } |
| 85 | |
Mark Nelson | f9226d5 | 2008-10-27 20:38:08 +0000 | [diff] [blame] | 86 | static dma_addr_t ibmebus_map_page(struct device *dev, |
| 87 | struct page *page, |
| 88 | unsigned long offset, |
| 89 | size_t size, |
| 90 | enum dma_data_direction direction, |
| 91 | struct dma_attrs *attrs) |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 92 | { |
Mark Nelson | f9226d5 | 2008-10-27 20:38:08 +0000 | [diff] [blame] | 93 | return (dma_addr_t)(page_address(page) + offset); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 94 | } |
| 95 | |
Mark Nelson | f9226d5 | 2008-10-27 20:38:08 +0000 | [diff] [blame] | 96 | static void ibmebus_unmap_page(struct device *dev, |
| 97 | dma_addr_t dma_addr, |
| 98 | size_t size, |
| 99 | enum dma_data_direction direction, |
| 100 | struct dma_attrs *attrs) |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 101 | { |
| 102 | return; |
| 103 | } |
| 104 | |
| 105 | static int ibmebus_map_sg(struct device *dev, |
Jens Axboe | 78bdc31 | 2007-10-12 13:44:12 +0200 | [diff] [blame] | 106 | struct scatterlist *sgl, |
Mark Nelson | 3affedc | 2008-07-05 05:05:42 +1000 | [diff] [blame] | 107 | int nents, enum dma_data_direction direction, |
| 108 | struct dma_attrs *attrs) |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 109 | { |
Jens Axboe | 78bdc31 | 2007-10-12 13:44:12 +0200 | [diff] [blame] | 110 | struct scatterlist *sg; |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 111 | int i; |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 112 | |
Jens Axboe | 78bdc31 | 2007-10-12 13:44:12 +0200 | [diff] [blame] | 113 | for_each_sg(sgl, sg, nents, i) { |
Jens Axboe | 58b053e | 2007-10-22 20:02:46 +0200 | [diff] [blame] | 114 | sg->dma_address = (dma_addr_t) sg_virt(sg); |
Jens Axboe | 78bdc31 | 2007-10-12 13:44:12 +0200 | [diff] [blame] | 115 | sg->dma_length = sg->length; |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 116 | } |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 117 | |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 118 | return nents; |
| 119 | } |
| 120 | |
| 121 | static void ibmebus_unmap_sg(struct device *dev, |
| 122 | struct scatterlist *sg, |
Mark Nelson | 3affedc | 2008-07-05 05:05:42 +1000 | [diff] [blame] | 123 | int nents, enum dma_data_direction direction, |
| 124 | struct dma_attrs *attrs) |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 125 | { |
| 126 | return; |
| 127 | } |
| 128 | |
| 129 | static int ibmebus_dma_supported(struct device *dev, u64 mask) |
| 130 | { |
Milton Miller | d24f9c6 | 2011-06-24 09:05:24 +0000 | [diff] [blame] | 131 | return mask == DMA_BIT_MASK(64); |
| 132 | } |
| 133 | |
| 134 | static u64 ibmebus_dma_get_required_mask(struct device *dev) |
| 135 | { |
| 136 | return DMA_BIT_MASK(64); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 137 | } |
| 138 | |
FUJITA Tomonori | 45223c5 | 2009-08-04 19:08:25 +0000 | [diff] [blame] | 139 | static struct dma_map_ops ibmebus_dma_ops = { |
Andrzej Pietrasiewicz | bfbf7d6 | 2011-12-06 14:14:46 +0100 | [diff] [blame] | 140 | .alloc = ibmebus_alloc_coherent, |
| 141 | .free = ibmebus_free_coherent, |
Milton Miller | 2eccacd | 2011-06-24 09:05:25 +0000 | [diff] [blame] | 142 | .map_sg = ibmebus_map_sg, |
| 143 | .unmap_sg = ibmebus_unmap_sg, |
| 144 | .dma_supported = ibmebus_dma_supported, |
Milton Miller | d24f9c6 | 2011-06-24 09:05:24 +0000 | [diff] [blame] | 145 | .get_required_mask = ibmebus_dma_get_required_mask, |
Milton Miller | 2eccacd | 2011-06-24 09:05:25 +0000 | [diff] [blame] | 146 | .map_page = ibmebus_map_page, |
| 147 | .unmap_page = ibmebus_unmap_page, |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 148 | }; |
| 149 | |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 150 | static int ibmebus_match_path(struct device *dev, void *data) |
| 151 | { |
Grant Likely | a454dc5 | 2010-07-22 15:52:34 -0600 | [diff] [blame] | 152 | struct device_node *dn = to_platform_device(dev)->dev.of_node; |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 153 | return (dn->full_name && |
| 154 | (strcasecmp((char *)data, dn->full_name) == 0)); |
| 155 | } |
| 156 | |
| 157 | static int ibmebus_match_node(struct device *dev, void *data) |
| 158 | { |
Grant Likely | a454dc5 | 2010-07-22 15:52:34 -0600 | [diff] [blame] | 159 | return to_platform_device(dev)->dev.of_node == data; |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | static int ibmebus_create_device(struct device_node *dn) |
| 163 | { |
Grant Likely | a454dc5 | 2010-07-22 15:52:34 -0600 | [diff] [blame] | 164 | struct platform_device *dev; |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 165 | int ret; |
| 166 | |
| 167 | dev = of_device_alloc(dn, NULL, &ibmebus_bus_device); |
| 168 | if (!dev) |
| 169 | return -ENOMEM; |
| 170 | |
| 171 | dev->dev.bus = &ibmebus_bus_type; |
| 172 | dev->dev.archdata.dma_ops = &ibmebus_dma_ops; |
| 173 | |
Grant Likely | 7096d04 | 2010-10-20 11:45:13 -0600 | [diff] [blame] | 174 | ret = of_device_add(dev); |
| 175 | if (ret) |
| 176 | platform_device_put(dev); |
| 177 | return ret; |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | static int ibmebus_create_devices(const struct of_device_id *matches) |
| 181 | { |
| 182 | struct device_node *root, *child; |
| 183 | int ret = 0; |
| 184 | |
| 185 | root = of_find_node_by_path("/"); |
| 186 | |
Stephen Rothwell | 85e99b9 | 2008-01-03 15:13:37 +1100 | [diff] [blame] | 187 | for_each_child_of_node(root, child) { |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 188 | if (!of_match_node(matches, child)) |
| 189 | continue; |
| 190 | |
| 191 | if (bus_find_device(&ibmebus_bus_type, NULL, child, |
| 192 | ibmebus_match_node)) |
| 193 | continue; |
| 194 | |
| 195 | ret = ibmebus_create_device(child); |
| 196 | if (ret) { |
| 197 | printk(KERN_ERR "%s: failed to create device (%i)", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 198 | __func__, ret); |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 199 | of_node_put(child); |
| 200 | break; |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | of_node_put(root); |
| 205 | return ret; |
| 206 | } |
| 207 | |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 208 | int ibmebus_register_driver(struct platform_driver *drv) |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 209 | { |
Joachim Fenkes | 6b08f3a | 2007-09-26 19:45:51 +1000 | [diff] [blame] | 210 | /* If the driver uses devices that ibmebus doesn't know, add them */ |
Grant Likely | 597b9d1 | 2010-04-13 16:13:01 -0700 | [diff] [blame] | 211 | ibmebus_create_devices(drv->driver.of_match_table); |
Joachim Fenkes | 6b08f3a | 2007-09-26 19:45:51 +1000 | [diff] [blame] | 212 | |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 213 | drv->driver.bus = &ibmebus_bus_type; |
| 214 | return driver_register(&drv->driver); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 215 | } |
| 216 | EXPORT_SYMBOL(ibmebus_register_driver); |
| 217 | |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 218 | void ibmebus_unregister_driver(struct platform_driver *drv) |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 219 | { |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 220 | driver_unregister(&drv->driver); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 221 | } |
| 222 | EXPORT_SYMBOL(ibmebus_unregister_driver); |
| 223 | |
Joachim Fenkes | 6b08f3a | 2007-09-26 19:45:51 +1000 | [diff] [blame] | 224 | int ibmebus_request_irq(u32 ist, irq_handler_t handler, |
| 225 | unsigned long irq_flags, const char *devname, |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 226 | void *dev_id) |
| 227 | { |
Benjamin Herrenschmidt | 6e99e45 | 2006-07-10 04:44:42 -0700 | [diff] [blame] | 228 | unsigned int irq = irq_create_mapping(NULL, ist); |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 229 | |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 230 | if (irq == NO_IRQ) |
| 231 | return -EINVAL; |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 232 | |
Joachim Fenkes | 6b08f3a | 2007-09-26 19:45:51 +1000 | [diff] [blame] | 233 | return request_irq(irq, handler, irq_flags, devname, dev_id); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 234 | } |
| 235 | EXPORT_SYMBOL(ibmebus_request_irq); |
| 236 | |
Joachim Fenkes | 6b08f3a | 2007-09-26 19:45:51 +1000 | [diff] [blame] | 237 | void ibmebus_free_irq(u32 ist, void *dev_id) |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 238 | { |
Benjamin Herrenschmidt | 0ebfff1 | 2006-07-03 21:36:01 +1000 | [diff] [blame] | 239 | unsigned int irq = irq_find_mapping(NULL, ist); |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 240 | |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 241 | free_irq(irq, dev_id); |
Sebastien Dugue | 6358d6c | 2008-11-27 01:19:18 +0000 | [diff] [blame] | 242 | irq_dispose_mapping(irq); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 243 | } |
| 244 | EXPORT_SYMBOL(ibmebus_free_irq); |
| 245 | |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 246 | static char *ibmebus_chomp(const char *in, size_t count) |
| 247 | { |
Jesper Juhl | 61a564f | 2007-08-24 09:45:08 +1000 | [diff] [blame] | 248 | char *out = kmalloc(count + 1, GFP_KERNEL); |
| 249 | |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 250 | if (!out) |
| 251 | return NULL; |
| 252 | |
| 253 | memcpy(out, in, count); |
| 254 | out[count] = '\0'; |
| 255 | if (out[count - 1] == '\n') |
| 256 | out[count - 1] = '\0'; |
| 257 | |
| 258 | return out; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | static ssize_t ibmebus_store_probe(struct bus_type *bus, |
| 262 | const char *buf, size_t count) |
| 263 | { |
| 264 | struct device_node *dn = NULL; |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 265 | char *path; |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 266 | ssize_t rc = 0; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 267 | |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 268 | path = ibmebus_chomp(buf, count); |
| 269 | if (!path) |
| 270 | return -ENOMEM; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 271 | |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 272 | if (bus_find_device(&ibmebus_bus_type, NULL, path, |
Joachim Fenkes | 74c9b99 | 2007-09-26 19:46:34 +1000 | [diff] [blame] | 273 | ibmebus_match_path)) { |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 274 | printk(KERN_WARNING "%s: %s has already been probed\n", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 275 | __func__, path); |
Joachim Fenkes | 74c9b99 | 2007-09-26 19:46:34 +1000 | [diff] [blame] | 276 | rc = -EEXIST; |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 277 | goto out; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 278 | } |
| 279 | |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 280 | if ((dn = of_find_node_by_path(path))) { |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 281 | rc = ibmebus_create_device(dn); |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 282 | of_node_put(dn); |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 283 | } else { |
| 284 | printk(KERN_WARNING "%s: no such device node: %s\n", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 285 | __func__, path); |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 286 | rc = -ENODEV; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 287 | } |
| 288 | |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 289 | out: |
| 290 | kfree(path); |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 291 | if (rc) |
| 292 | return rc; |
| 293 | return count; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 294 | } |
Greg Kroah-Hartman | 3abd136 | 2013-08-23 14:24:30 -0700 | [diff] [blame] | 295 | static BUS_ATTR(probe, S_IWUSR, NULL, ibmebus_store_probe); |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 296 | |
| 297 | static ssize_t ibmebus_store_remove(struct bus_type *bus, |
| 298 | const char *buf, size_t count) |
| 299 | { |
| 300 | struct device *dev; |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 301 | char *path; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 302 | |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 303 | path = ibmebus_chomp(buf, count); |
| 304 | if (!path) |
| 305 | return -ENOMEM; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 306 | |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 307 | if ((dev = bus_find_device(&ibmebus_bus_type, NULL, path, |
| 308 | ibmebus_match_path))) { |
Grant Likely | a454dc5 | 2010-07-22 15:52:34 -0600 | [diff] [blame] | 309 | of_device_unregister(to_platform_device(dev)); |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 310 | |
| 311 | kfree(path); |
| 312 | return count; |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 313 | } else { |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 314 | printk(KERN_WARNING "%s: %s not on the bus\n", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 315 | __func__, path); |
Joachim Fenkes | 0727702 | 2007-03-22 17:00:46 +0100 | [diff] [blame] | 316 | |
| 317 | kfree(path); |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 318 | return -ENODEV; |
| 319 | } |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 320 | } |
Greg Kroah-Hartman | 3abd136 | 2013-08-23 14:24:30 -0700 | [diff] [blame] | 321 | static BUS_ATTR(remove, S_IWUSR, NULL, ibmebus_store_remove); |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 322 | |
Greg Kroah-Hartman | 3abd136 | 2013-08-23 14:24:30 -0700 | [diff] [blame] | 323 | static struct attribute *ibmbus_bus_attrs[] = { |
| 324 | &bus_attr_probe.attr, |
| 325 | &bus_attr_remove.attr, |
| 326 | NULL, |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 327 | }; |
Greg Kroah-Hartman | 3abd136 | 2013-08-23 14:24:30 -0700 | [diff] [blame] | 328 | ATTRIBUTE_GROUPS(ibmbus_bus); |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 329 | |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 330 | static int ibmebus_bus_bus_match(struct device *dev, struct device_driver *drv) |
| 331 | { |
| 332 | const struct of_device_id *matches = drv->of_match_table; |
| 333 | |
| 334 | if (!matches) |
| 335 | return 0; |
| 336 | |
| 337 | return of_match_device(matches, dev) != NULL; |
| 338 | } |
| 339 | |
| 340 | static int ibmebus_bus_device_probe(struct device *dev) |
| 341 | { |
| 342 | int error = -ENODEV; |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 343 | struct platform_driver *drv; |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 344 | struct platform_device *of_dev; |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 345 | |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 346 | drv = to_platform_driver(dev->driver); |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 347 | of_dev = to_platform_device(dev); |
| 348 | |
| 349 | if (!drv->probe) |
| 350 | return error; |
| 351 | |
| 352 | of_dev_get(of_dev); |
| 353 | |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 354 | if (of_driver_match_device(dev, dev->driver)) |
| 355 | error = drv->probe(of_dev); |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 356 | if (error) |
| 357 | of_dev_put(of_dev); |
| 358 | |
| 359 | return error; |
| 360 | } |
| 361 | |
| 362 | static int ibmebus_bus_device_remove(struct device *dev) |
| 363 | { |
| 364 | struct platform_device *of_dev = to_platform_device(dev); |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 365 | struct platform_driver *drv = to_platform_driver(dev->driver); |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 366 | |
| 367 | if (dev->driver && drv->remove) |
| 368 | drv->remove(of_dev); |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | static void ibmebus_bus_device_shutdown(struct device *dev) |
| 373 | { |
| 374 | struct platform_device *of_dev = to_platform_device(dev); |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 375 | struct platform_driver *drv = to_platform_driver(dev->driver); |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 376 | |
| 377 | if (dev->driver && drv->shutdown) |
| 378 | drv->shutdown(of_dev); |
| 379 | } |
| 380 | |
| 381 | /* |
| 382 | * ibmebus_bus_device_attrs |
| 383 | */ |
| 384 | static ssize_t devspec_show(struct device *dev, |
| 385 | struct device_attribute *attr, char *buf) |
| 386 | { |
| 387 | struct platform_device *ofdev; |
| 388 | |
| 389 | ofdev = to_platform_device(dev); |
| 390 | return sprintf(buf, "%s\n", ofdev->dev.of_node->full_name); |
| 391 | } |
| 392 | |
| 393 | static ssize_t name_show(struct device *dev, |
| 394 | struct device_attribute *attr, char *buf) |
| 395 | { |
| 396 | struct platform_device *ofdev; |
| 397 | |
| 398 | ofdev = to_platform_device(dev); |
| 399 | return sprintf(buf, "%s\n", ofdev->dev.of_node->name); |
| 400 | } |
| 401 | |
| 402 | static ssize_t modalias_show(struct device *dev, |
| 403 | struct device_attribute *attr, char *buf) |
| 404 | { |
| 405 | ssize_t len = of_device_get_modalias(dev, buf, PAGE_SIZE - 2); |
| 406 | buf[len] = '\n'; |
| 407 | buf[len+1] = 0; |
| 408 | return len+1; |
| 409 | } |
| 410 | |
Daniel Axtens | 635218c | 2016-01-06 11:45:50 +1100 | [diff] [blame] | 411 | static struct device_attribute ibmebus_bus_device_attrs[] = { |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 412 | __ATTR_RO(devspec), |
| 413 | __ATTR_RO(name), |
| 414 | __ATTR_RO(modalias), |
| 415 | __ATTR_NULL |
| 416 | }; |
| 417 | |
| 418 | #ifdef CONFIG_PM_SLEEP |
| 419 | static int ibmebus_bus_legacy_suspend(struct device *dev, pm_message_t mesg) |
| 420 | { |
| 421 | struct platform_device *of_dev = to_platform_device(dev); |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 422 | struct platform_driver *drv = to_platform_driver(dev->driver); |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 423 | int ret = 0; |
| 424 | |
| 425 | if (dev->driver && drv->suspend) |
| 426 | ret = drv->suspend(of_dev, mesg); |
| 427 | return ret; |
| 428 | } |
| 429 | |
| 430 | static int ibmebus_bus_legacy_resume(struct device *dev) |
| 431 | { |
| 432 | struct platform_device *of_dev = to_platform_device(dev); |
Rob Herring | c45640e | 2013-04-20 21:51:08 -0500 | [diff] [blame] | 433 | struct platform_driver *drv = to_platform_driver(dev->driver); |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 434 | int ret = 0; |
| 435 | |
| 436 | if (dev->driver && drv->resume) |
| 437 | ret = drv->resume(of_dev); |
| 438 | return ret; |
| 439 | } |
| 440 | |
| 441 | static int ibmebus_bus_pm_prepare(struct device *dev) |
| 442 | { |
| 443 | struct device_driver *drv = dev->driver; |
| 444 | int ret = 0; |
| 445 | |
| 446 | if (drv && drv->pm && drv->pm->prepare) |
| 447 | ret = drv->pm->prepare(dev); |
| 448 | |
| 449 | return ret; |
| 450 | } |
| 451 | |
| 452 | static void ibmebus_bus_pm_complete(struct device *dev) |
| 453 | { |
| 454 | struct device_driver *drv = dev->driver; |
| 455 | |
| 456 | if (drv && drv->pm && drv->pm->complete) |
| 457 | drv->pm->complete(dev); |
| 458 | } |
| 459 | |
| 460 | #ifdef CONFIG_SUSPEND |
| 461 | |
| 462 | static int ibmebus_bus_pm_suspend(struct device *dev) |
| 463 | { |
| 464 | struct device_driver *drv = dev->driver; |
| 465 | int ret = 0; |
| 466 | |
| 467 | if (!drv) |
| 468 | return 0; |
| 469 | |
| 470 | if (drv->pm) { |
| 471 | if (drv->pm->suspend) |
| 472 | ret = drv->pm->suspend(dev); |
| 473 | } else { |
| 474 | ret = ibmebus_bus_legacy_suspend(dev, PMSG_SUSPEND); |
| 475 | } |
| 476 | |
| 477 | return ret; |
| 478 | } |
| 479 | |
| 480 | static int ibmebus_bus_pm_suspend_noirq(struct device *dev) |
| 481 | { |
| 482 | struct device_driver *drv = dev->driver; |
| 483 | int ret = 0; |
| 484 | |
| 485 | if (!drv) |
| 486 | return 0; |
| 487 | |
| 488 | if (drv->pm) { |
| 489 | if (drv->pm->suspend_noirq) |
| 490 | ret = drv->pm->suspend_noirq(dev); |
| 491 | } |
| 492 | |
| 493 | return ret; |
| 494 | } |
| 495 | |
| 496 | static int ibmebus_bus_pm_resume(struct device *dev) |
| 497 | { |
| 498 | struct device_driver *drv = dev->driver; |
| 499 | int ret = 0; |
| 500 | |
| 501 | if (!drv) |
| 502 | return 0; |
| 503 | |
| 504 | if (drv->pm) { |
| 505 | if (drv->pm->resume) |
| 506 | ret = drv->pm->resume(dev); |
| 507 | } else { |
| 508 | ret = ibmebus_bus_legacy_resume(dev); |
| 509 | } |
| 510 | |
| 511 | return ret; |
| 512 | } |
| 513 | |
| 514 | static int ibmebus_bus_pm_resume_noirq(struct device *dev) |
| 515 | { |
| 516 | struct device_driver *drv = dev->driver; |
| 517 | int ret = 0; |
| 518 | |
| 519 | if (!drv) |
| 520 | return 0; |
| 521 | |
| 522 | if (drv->pm) { |
| 523 | if (drv->pm->resume_noirq) |
| 524 | ret = drv->pm->resume_noirq(dev); |
| 525 | } |
| 526 | |
| 527 | return ret; |
| 528 | } |
| 529 | |
| 530 | #else /* !CONFIG_SUSPEND */ |
| 531 | |
| 532 | #define ibmebus_bus_pm_suspend NULL |
| 533 | #define ibmebus_bus_pm_resume NULL |
| 534 | #define ibmebus_bus_pm_suspend_noirq NULL |
| 535 | #define ibmebus_bus_pm_resume_noirq NULL |
| 536 | |
| 537 | #endif /* !CONFIG_SUSPEND */ |
| 538 | |
Rafael J. Wysocki | 1f112ce | 2011-04-11 22:54:42 +0200 | [diff] [blame] | 539 | #ifdef CONFIG_HIBERNATE_CALLBACKS |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 540 | |
| 541 | static int ibmebus_bus_pm_freeze(struct device *dev) |
| 542 | { |
| 543 | struct device_driver *drv = dev->driver; |
| 544 | int ret = 0; |
| 545 | |
| 546 | if (!drv) |
| 547 | return 0; |
| 548 | |
| 549 | if (drv->pm) { |
| 550 | if (drv->pm->freeze) |
| 551 | ret = drv->pm->freeze(dev); |
| 552 | } else { |
| 553 | ret = ibmebus_bus_legacy_suspend(dev, PMSG_FREEZE); |
| 554 | } |
| 555 | |
| 556 | return ret; |
| 557 | } |
| 558 | |
| 559 | static int ibmebus_bus_pm_freeze_noirq(struct device *dev) |
| 560 | { |
| 561 | struct device_driver *drv = dev->driver; |
| 562 | int ret = 0; |
| 563 | |
| 564 | if (!drv) |
| 565 | return 0; |
| 566 | |
| 567 | if (drv->pm) { |
| 568 | if (drv->pm->freeze_noirq) |
| 569 | ret = drv->pm->freeze_noirq(dev); |
| 570 | } |
| 571 | |
| 572 | return ret; |
| 573 | } |
| 574 | |
| 575 | static int ibmebus_bus_pm_thaw(struct device *dev) |
| 576 | { |
| 577 | struct device_driver *drv = dev->driver; |
| 578 | int ret = 0; |
| 579 | |
| 580 | if (!drv) |
| 581 | return 0; |
| 582 | |
| 583 | if (drv->pm) { |
| 584 | if (drv->pm->thaw) |
| 585 | ret = drv->pm->thaw(dev); |
| 586 | } else { |
| 587 | ret = ibmebus_bus_legacy_resume(dev); |
| 588 | } |
| 589 | |
| 590 | return ret; |
| 591 | } |
| 592 | |
| 593 | static int ibmebus_bus_pm_thaw_noirq(struct device *dev) |
| 594 | { |
| 595 | struct device_driver *drv = dev->driver; |
| 596 | int ret = 0; |
| 597 | |
| 598 | if (!drv) |
| 599 | return 0; |
| 600 | |
| 601 | if (drv->pm) { |
| 602 | if (drv->pm->thaw_noirq) |
| 603 | ret = drv->pm->thaw_noirq(dev); |
| 604 | } |
| 605 | |
| 606 | return ret; |
| 607 | } |
| 608 | |
| 609 | static int ibmebus_bus_pm_poweroff(struct device *dev) |
| 610 | { |
| 611 | struct device_driver *drv = dev->driver; |
| 612 | int ret = 0; |
| 613 | |
| 614 | if (!drv) |
| 615 | return 0; |
| 616 | |
| 617 | if (drv->pm) { |
| 618 | if (drv->pm->poweroff) |
| 619 | ret = drv->pm->poweroff(dev); |
| 620 | } else { |
| 621 | ret = ibmebus_bus_legacy_suspend(dev, PMSG_HIBERNATE); |
| 622 | } |
| 623 | |
| 624 | return ret; |
| 625 | } |
| 626 | |
| 627 | static int ibmebus_bus_pm_poweroff_noirq(struct device *dev) |
| 628 | { |
| 629 | struct device_driver *drv = dev->driver; |
| 630 | int ret = 0; |
| 631 | |
| 632 | if (!drv) |
| 633 | return 0; |
| 634 | |
| 635 | if (drv->pm) { |
| 636 | if (drv->pm->poweroff_noirq) |
| 637 | ret = drv->pm->poweroff_noirq(dev); |
| 638 | } |
| 639 | |
| 640 | return ret; |
| 641 | } |
| 642 | |
| 643 | static int ibmebus_bus_pm_restore(struct device *dev) |
| 644 | { |
| 645 | struct device_driver *drv = dev->driver; |
| 646 | int ret = 0; |
| 647 | |
| 648 | if (!drv) |
| 649 | return 0; |
| 650 | |
| 651 | if (drv->pm) { |
| 652 | if (drv->pm->restore) |
| 653 | ret = drv->pm->restore(dev); |
| 654 | } else { |
| 655 | ret = ibmebus_bus_legacy_resume(dev); |
| 656 | } |
| 657 | |
| 658 | return ret; |
| 659 | } |
| 660 | |
| 661 | static int ibmebus_bus_pm_restore_noirq(struct device *dev) |
| 662 | { |
| 663 | struct device_driver *drv = dev->driver; |
| 664 | int ret = 0; |
| 665 | |
| 666 | if (!drv) |
| 667 | return 0; |
| 668 | |
| 669 | if (drv->pm) { |
| 670 | if (drv->pm->restore_noirq) |
| 671 | ret = drv->pm->restore_noirq(dev); |
| 672 | } |
| 673 | |
| 674 | return ret; |
| 675 | } |
| 676 | |
Rafael J. Wysocki | 1f112ce | 2011-04-11 22:54:42 +0200 | [diff] [blame] | 677 | #else /* !CONFIG_HIBERNATE_CALLBACKS */ |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 678 | |
| 679 | #define ibmebus_bus_pm_freeze NULL |
| 680 | #define ibmebus_bus_pm_thaw NULL |
| 681 | #define ibmebus_bus_pm_poweroff NULL |
| 682 | #define ibmebus_bus_pm_restore NULL |
| 683 | #define ibmebus_bus_pm_freeze_noirq NULL |
| 684 | #define ibmebus_bus_pm_thaw_noirq NULL |
| 685 | #define ibmebus_bus_pm_poweroff_noirq NULL |
| 686 | #define ibmebus_bus_pm_restore_noirq NULL |
| 687 | |
Rafael J. Wysocki | 1f112ce | 2011-04-11 22:54:42 +0200 | [diff] [blame] | 688 | #endif /* !CONFIG_HIBERNATE_CALLBACKS */ |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 689 | |
| 690 | static struct dev_pm_ops ibmebus_bus_dev_pm_ops = { |
| 691 | .prepare = ibmebus_bus_pm_prepare, |
| 692 | .complete = ibmebus_bus_pm_complete, |
| 693 | .suspend = ibmebus_bus_pm_suspend, |
| 694 | .resume = ibmebus_bus_pm_resume, |
| 695 | .freeze = ibmebus_bus_pm_freeze, |
| 696 | .thaw = ibmebus_bus_pm_thaw, |
| 697 | .poweroff = ibmebus_bus_pm_poweroff, |
| 698 | .restore = ibmebus_bus_pm_restore, |
| 699 | .suspend_noirq = ibmebus_bus_pm_suspend_noirq, |
| 700 | .resume_noirq = ibmebus_bus_pm_resume_noirq, |
| 701 | .freeze_noirq = ibmebus_bus_pm_freeze_noirq, |
| 702 | .thaw_noirq = ibmebus_bus_pm_thaw_noirq, |
| 703 | .poweroff_noirq = ibmebus_bus_pm_poweroff_noirq, |
| 704 | .restore_noirq = ibmebus_bus_pm_restore_noirq, |
| 705 | }; |
| 706 | |
| 707 | #define IBMEBUS_BUS_PM_OPS_PTR (&ibmebus_bus_dev_pm_ops) |
| 708 | |
| 709 | #else /* !CONFIG_PM_SLEEP */ |
| 710 | |
| 711 | #define IBMEBUS_BUS_PM_OPS_PTR NULL |
| 712 | |
| 713 | #endif /* !CONFIG_PM_SLEEP */ |
| 714 | |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 715 | struct bus_type ibmebus_bus_type = { |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 716 | .name = "ibmebus", |
Grant Likely | 07d57a3 | 2012-02-01 11:22:22 -0700 | [diff] [blame] | 717 | .uevent = of_device_uevent_modalias, |
Greg Kroah-Hartman | 3abd136 | 2013-08-23 14:24:30 -0700 | [diff] [blame] | 718 | .bus_groups = ibmbus_bus_groups, |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 719 | .match = ibmebus_bus_bus_match, |
| 720 | .probe = ibmebus_bus_device_probe, |
| 721 | .remove = ibmebus_bus_device_remove, |
| 722 | .shutdown = ibmebus_bus_device_shutdown, |
| 723 | .dev_attrs = ibmebus_bus_device_attrs, |
| 724 | .pm = IBMEBUS_BUS_PM_OPS_PTR, |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 725 | }; |
| 726 | EXPORT_SYMBOL(ibmebus_bus_type); |
| 727 | |
| 728 | static int __init ibmebus_bus_init(void) |
| 729 | { |
| 730 | int err; |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 731 | |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 732 | printk(KERN_INFO "IBM eBus Device Driver\n"); |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 733 | |
Grant Likely | 710ac54 | 2011-02-17 00:26:57 -0700 | [diff] [blame] | 734 | err = bus_register(&ibmebus_bus_type); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 735 | if (err) { |
Joachim Fenkes | a988c0a | 2007-09-26 19:44:57 +1000 | [diff] [blame] | 736 | printk(KERN_ERR "%s: failed to register IBM eBus.\n", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 737 | __func__); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 738 | return err; |
| 739 | } |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 740 | |
Joachim Fenkes | 6bccf75 | 2007-03-09 19:00:32 +0100 | [diff] [blame] | 741 | err = device_register(&ibmebus_bus_device); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 742 | if (err) { |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 743 | printk(KERN_WARNING "%s: device_register returned %i\n", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 744 | __func__, err); |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 745 | bus_unregister(&ibmebus_bus_type); |
| 746 | |
| 747 | return err; |
| 748 | } |
Joachim Fenkes | a830880 | 2007-03-09 18:56:46 +0100 | [diff] [blame] | 749 | |
Paul Gortmaker | 1b17adf1 | 2008-07-08 08:42:09 +1000 | [diff] [blame] | 750 | err = ibmebus_create_devices(ibmebus_matches); |
Joachim Fenkes | 55347cc | 2007-09-26 19:45:21 +1000 | [diff] [blame] | 751 | if (err) { |
| 752 | device_unregister(&ibmebus_bus_device); |
| 753 | bus_unregister(&ibmebus_bus_type); |
| 754 | return err; |
| 755 | } |
| 756 | |
Heiko J Schick | d7a3010 | 2005-11-16 08:56:43 +0100 | [diff] [blame] | 757 | return 0; |
| 758 | } |
Joachim Fenkes | a988c0a | 2007-09-26 19:44:57 +1000 | [diff] [blame] | 759 | postcore_initcall(ibmebus_bus_init); |