Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 1 | /* |
| 2 | * MUSB OTG driver debugfs support |
| 3 | * |
| 4 | * Copyright 2010 Nokia Corporation |
| 5 | * Contact: Felipe Balbi <felipe.balbi@nokia.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * version 2 as published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 19 | * 02110-1301 USA |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 24 | * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 27 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 28 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | #include <linux/module.h> |
| 35 | #include <linux/kernel.h> |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 36 | #include <linux/init.h> |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 37 | #include <linux/debugfs.h> |
| 38 | #include <linux/seq_file.h> |
| 39 | |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 40 | #include <asm/uaccess.h> |
| 41 | |
| 42 | #include "musb_core.h" |
| 43 | #include "musb_debug.h" |
| 44 | |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 45 | struct musb_register_map { |
| 46 | char *name; |
| 47 | unsigned offset; |
| 48 | unsigned size; |
| 49 | }; |
| 50 | |
| 51 | static const struct musb_register_map musb_regmap[] = { |
Roman Byshko | c2365ce | 2014-11-10 21:53:32 +0100 | [diff] [blame] | 52 | { "FAddr", MUSB_FADDR, 8 }, |
| 53 | { "Power", MUSB_POWER, 8 }, |
| 54 | { "Frame", MUSB_FRAME, 16 }, |
| 55 | { "Index", MUSB_INDEX, 8 }, |
| 56 | { "Testmode", MUSB_TESTMODE, 8 }, |
| 57 | { "TxMaxPp", MUSB_TXMAXP, 16 }, |
| 58 | { "TxCSRp", MUSB_TXCSR, 16 }, |
| 59 | { "RxMaxPp", MUSB_RXMAXP, 16 }, |
| 60 | { "RxCSR", MUSB_RXCSR, 16 }, |
| 61 | { "RxCount", MUSB_RXCOUNT, 16 }, |
Roman Byshko | c2365ce | 2014-11-10 21:53:32 +0100 | [diff] [blame] | 62 | { "IntrRxE", MUSB_INTRRXE, 16 }, |
| 63 | { "IntrTxE", MUSB_INTRTXE, 16 }, |
| 64 | { "IntrUsbE", MUSB_INTRUSBE, 8 }, |
| 65 | { "DevCtl", MUSB_DEVCTL, 8 }, |
Roman Byshko | c2365ce | 2014-11-10 21:53:32 +0100 | [diff] [blame] | 66 | { "VControl", 0x68, 32 }, |
| 67 | { "HWVers", 0x69, 16 }, |
Roman Byshko | c2365ce | 2014-11-10 21:53:32 +0100 | [diff] [blame] | 68 | { "LinkInfo", MUSB_LINKINFO, 8 }, |
| 69 | { "VPLen", MUSB_VPLEN, 8 }, |
| 70 | { "HS_EOF1", MUSB_HS_EOF1, 8 }, |
| 71 | { "FS_EOF1", MUSB_FS_EOF1, 8 }, |
| 72 | { "LS_EOF1", MUSB_LS_EOF1, 8 }, |
| 73 | { "SOFT_RST", 0x7F, 8 }, |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 74 | { "DMA_CNTLch0", 0x204, 16 }, |
Anand Gadiyar | 0936fb5 | 2010-07-08 14:02:59 +0530 | [diff] [blame] | 75 | { "DMA_ADDRch0", 0x208, 32 }, |
| 76 | { "DMA_COUNTch0", 0x20C, 32 }, |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 77 | { "DMA_CNTLch1", 0x214, 16 }, |
Anand Gadiyar | 0936fb5 | 2010-07-08 14:02:59 +0530 | [diff] [blame] | 78 | { "DMA_ADDRch1", 0x218, 32 }, |
| 79 | { "DMA_COUNTch1", 0x21C, 32 }, |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 80 | { "DMA_CNTLch2", 0x224, 16 }, |
Anand Gadiyar | 0936fb5 | 2010-07-08 14:02:59 +0530 | [diff] [blame] | 81 | { "DMA_ADDRch2", 0x228, 32 }, |
| 82 | { "DMA_COUNTch2", 0x22C, 32 }, |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 83 | { "DMA_CNTLch3", 0x234, 16 }, |
Anand Gadiyar | 0936fb5 | 2010-07-08 14:02:59 +0530 | [diff] [blame] | 84 | { "DMA_ADDRch3", 0x238, 32 }, |
| 85 | { "DMA_COUNTch3", 0x23C, 32 }, |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 86 | { "DMA_CNTLch4", 0x244, 16 }, |
Anand Gadiyar | 0936fb5 | 2010-07-08 14:02:59 +0530 | [diff] [blame] | 87 | { "DMA_ADDRch4", 0x248, 32 }, |
| 88 | { "DMA_COUNTch4", 0x24C, 32 }, |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 89 | { "DMA_CNTLch5", 0x254, 16 }, |
Anand Gadiyar | 0936fb5 | 2010-07-08 14:02:59 +0530 | [diff] [blame] | 90 | { "DMA_ADDRch5", 0x258, 32 }, |
| 91 | { "DMA_COUNTch5", 0x25C, 32 }, |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 92 | { "DMA_CNTLch6", 0x264, 16 }, |
Anand Gadiyar | 0936fb5 | 2010-07-08 14:02:59 +0530 | [diff] [blame] | 93 | { "DMA_ADDRch6", 0x268, 32 }, |
| 94 | { "DMA_COUNTch6", 0x26C, 32 }, |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 95 | { "DMA_CNTLch7", 0x274, 16 }, |
Anand Gadiyar | 0936fb5 | 2010-07-08 14:02:59 +0530 | [diff] [blame] | 96 | { "DMA_ADDRch7", 0x278, 32 }, |
| 97 | { "DMA_COUNTch7", 0x27C, 32 }, |
Felipe Balbi | 449a7e9 | 2014-11-26 08:01:36 -0600 | [diff] [blame] | 98 | #ifndef CONFIG_BLACKFIN |
| 99 | { "ConfigData", MUSB_CONFIGDATA,8 }, |
| 100 | { "BabbleCtl", MUSB_BABBLE_CTL,8 }, |
| 101 | { "TxFIFOsz", MUSB_TXFIFOSZ, 8 }, |
| 102 | { "RxFIFOsz", MUSB_RXFIFOSZ, 8 }, |
| 103 | { "TxFIFOadd", MUSB_TXFIFOADD, 16 }, |
| 104 | { "RxFIFOadd", MUSB_RXFIFOADD, 16 }, |
| 105 | { "EPInfo", MUSB_EPINFO, 8 }, |
| 106 | { "RAMInfo", MUSB_RAMINFO, 8 }, |
| 107 | #endif |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 108 | { } /* Terminating Entry */ |
| 109 | }; |
| 110 | |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 111 | static int musb_regdump_show(struct seq_file *s, void *unused) |
| 112 | { |
| 113 | struct musb *musb = s->private; |
| 114 | unsigned i; |
| 115 | |
| 116 | seq_printf(s, "MUSB (M)HDRC Register Dump\n"); |
| 117 | |
| 118 | for (i = 0; i < ARRAY_SIZE(musb_regmap); i++) { |
| 119 | switch (musb_regmap[i].size) { |
| 120 | case 8: |
| 121 | seq_printf(s, "%-12s: %02x\n", musb_regmap[i].name, |
| 122 | musb_readb(musb->mregs, musb_regmap[i].offset)); |
| 123 | break; |
| 124 | case 16: |
| 125 | seq_printf(s, "%-12s: %04x\n", musb_regmap[i].name, |
| 126 | musb_readw(musb->mregs, musb_regmap[i].offset)); |
| 127 | break; |
| 128 | case 32: |
| 129 | seq_printf(s, "%-12s: %08x\n", musb_regmap[i].name, |
| 130 | musb_readl(musb->mregs, musb_regmap[i].offset)); |
| 131 | break; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | static int musb_regdump_open(struct inode *inode, struct file *file) |
| 139 | { |
| 140 | return single_open(file, musb_regdump_show, inode->i_private); |
| 141 | } |
| 142 | |
| 143 | static int musb_test_mode_show(struct seq_file *s, void *unused) |
| 144 | { |
| 145 | struct musb *musb = s->private; |
| 146 | unsigned test; |
| 147 | |
| 148 | test = musb_readb(musb->mregs, MUSB_TESTMODE); |
| 149 | |
| 150 | if (test & MUSB_TEST_FORCE_HOST) |
| 151 | seq_printf(s, "force host\n"); |
| 152 | |
| 153 | if (test & MUSB_TEST_FIFO_ACCESS) |
| 154 | seq_printf(s, "fifo access\n"); |
| 155 | |
| 156 | if (test & MUSB_TEST_FORCE_FS) |
| 157 | seq_printf(s, "force full-speed\n"); |
| 158 | |
| 159 | if (test & MUSB_TEST_FORCE_HS) |
| 160 | seq_printf(s, "force high-speed\n"); |
| 161 | |
| 162 | if (test & MUSB_TEST_PACKET) |
| 163 | seq_printf(s, "test packet\n"); |
| 164 | |
| 165 | if (test & MUSB_TEST_K) |
| 166 | seq_printf(s, "test K\n"); |
| 167 | |
| 168 | if (test & MUSB_TEST_J) |
| 169 | seq_printf(s, "test J\n"); |
| 170 | |
| 171 | if (test & MUSB_TEST_SE0_NAK) |
| 172 | seq_printf(s, "test SE0 NAK\n"); |
| 173 | |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | static const struct file_operations musb_regdump_fops = { |
| 178 | .open = musb_regdump_open, |
| 179 | .read = seq_read, |
| 180 | .llseek = seq_lseek, |
| 181 | .release = single_release, |
| 182 | }; |
| 183 | |
| 184 | static int musb_test_mode_open(struct inode *inode, struct file *file) |
| 185 | { |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 186 | return single_open(file, musb_test_mode_show, inode->i_private); |
| 187 | } |
| 188 | |
| 189 | static ssize_t musb_test_mode_write(struct file *file, |
| 190 | const char __user *ubuf, size_t count, loff_t *ppos) |
| 191 | { |
Mathias Nyman | 024cfa5 | 2010-09-06 13:52:01 +0300 | [diff] [blame] | 192 | struct seq_file *s = file->private_data; |
| 193 | struct musb *musb = s->private; |
Bin Liu | 205845e | 2015-03-24 15:09:25 -0500 | [diff] [blame] | 194 | u8 test; |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 195 | char buf[18]; |
| 196 | |
Bin Liu | 205845e | 2015-03-24 15:09:25 -0500 | [diff] [blame] | 197 | test = musb_readb(musb->mregs, MUSB_TESTMODE); |
| 198 | if (test) { |
| 199 | dev_err(musb->controller, "Error: test mode is already set. " |
| 200 | "Please do USB Bus Reset to start a new test.\n"); |
| 201 | return count; |
| 202 | } |
| 203 | |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 204 | memset(buf, 0x00, sizeof(buf)); |
| 205 | |
Markus Pargmann | fe198e3 | 2015-01-14 16:08:38 +0100 | [diff] [blame] | 206 | if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 207 | return -EFAULT; |
| 208 | |
Rasmus Villemoes | e87c3f8 | 2014-11-27 22:25:45 +0100 | [diff] [blame] | 209 | if (strstarts(buf, "force host")) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 210 | test = MUSB_TEST_FORCE_HOST; |
| 211 | |
Rasmus Villemoes | e87c3f8 | 2014-11-27 22:25:45 +0100 | [diff] [blame] | 212 | if (strstarts(buf, "fifo access")) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 213 | test = MUSB_TEST_FIFO_ACCESS; |
| 214 | |
Rasmus Villemoes | e87c3f8 | 2014-11-27 22:25:45 +0100 | [diff] [blame] | 215 | if (strstarts(buf, "force full-speed")) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 216 | test = MUSB_TEST_FORCE_FS; |
| 217 | |
Rasmus Villemoes | e87c3f8 | 2014-11-27 22:25:45 +0100 | [diff] [blame] | 218 | if (strstarts(buf, "force high-speed")) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 219 | test = MUSB_TEST_FORCE_HS; |
| 220 | |
Rasmus Villemoes | e87c3f8 | 2014-11-27 22:25:45 +0100 | [diff] [blame] | 221 | if (strstarts(buf, "test packet")) { |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 222 | test = MUSB_TEST_PACKET; |
| 223 | musb_load_testpacket(musb); |
| 224 | } |
| 225 | |
Rasmus Villemoes | e87c3f8 | 2014-11-27 22:25:45 +0100 | [diff] [blame] | 226 | if (strstarts(buf, "test K")) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 227 | test = MUSB_TEST_K; |
| 228 | |
Rasmus Villemoes | e87c3f8 | 2014-11-27 22:25:45 +0100 | [diff] [blame] | 229 | if (strstarts(buf, "test J")) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 230 | test = MUSB_TEST_J; |
| 231 | |
Rasmus Villemoes | e87c3f8 | 2014-11-27 22:25:45 +0100 | [diff] [blame] | 232 | if (strstarts(buf, "test SE0 NAK")) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 233 | test = MUSB_TEST_SE0_NAK; |
| 234 | |
| 235 | musb_writeb(musb->mregs, MUSB_TESTMODE, test); |
| 236 | |
| 237 | return count; |
| 238 | } |
| 239 | |
| 240 | static const struct file_operations musb_test_mode_fops = { |
| 241 | .open = musb_test_mode_open, |
| 242 | .write = musb_test_mode_write, |
| 243 | .read = seq_read, |
| 244 | .llseek = seq_lseek, |
| 245 | .release = single_release, |
| 246 | }; |
| 247 | |
Bin Liu | ffc1d299 | 2015-03-24 15:19:56 -0500 | [diff] [blame] | 248 | static int musb_softconnect_show(struct seq_file *s, void *unused) |
| 249 | { |
| 250 | struct musb *musb = s->private; |
| 251 | u8 reg; |
| 252 | int connect; |
| 253 | |
| 254 | switch (musb->xceiv->otg->state) { |
| 255 | case OTG_STATE_A_HOST: |
| 256 | case OTG_STATE_A_WAIT_BCON: |
| 257 | reg = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 258 | connect = reg & MUSB_DEVCTL_SESSION ? 1 : 0; |
| 259 | break; |
| 260 | default: |
| 261 | connect = -1; |
| 262 | } |
| 263 | |
| 264 | seq_printf(s, "%d\n", connect); |
| 265 | |
| 266 | return 0; |
| 267 | } |
| 268 | |
| 269 | static int musb_softconnect_open(struct inode *inode, struct file *file) |
| 270 | { |
| 271 | return single_open(file, musb_softconnect_show, inode->i_private); |
| 272 | } |
| 273 | |
| 274 | static ssize_t musb_softconnect_write(struct file *file, |
| 275 | const char __user *ubuf, size_t count, loff_t *ppos) |
| 276 | { |
| 277 | struct seq_file *s = file->private_data; |
| 278 | struct musb *musb = s->private; |
| 279 | char buf[2]; |
| 280 | u8 reg; |
| 281 | |
| 282 | memset(buf, 0x00, sizeof(buf)); |
| 283 | |
| 284 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
| 285 | return -EFAULT; |
| 286 | |
| 287 | if (!strncmp(buf, "0", 1)) { |
| 288 | switch (musb->xceiv->otg->state) { |
| 289 | case OTG_STATE_A_HOST: |
| 290 | musb_root_disconnect(musb); |
| 291 | reg = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 292 | reg &= ~MUSB_DEVCTL_SESSION; |
| 293 | musb_writeb(musb->mregs, MUSB_DEVCTL, reg); |
| 294 | break; |
| 295 | default: |
| 296 | break; |
| 297 | } |
| 298 | } else if (!strncmp(buf, "1", 1)) { |
| 299 | switch (musb->xceiv->otg->state) { |
| 300 | case OTG_STATE_A_WAIT_BCON: |
| 301 | /* |
| 302 | * musb_save_context() called in musb_runtime_suspend() |
| 303 | * might cache devctl with SESSION bit cleared during |
| 304 | * soft-disconnect, so specifically set SESSION bit |
| 305 | * here to preserve it for musb_runtime_resume(). |
| 306 | */ |
| 307 | musb->context.devctl |= MUSB_DEVCTL_SESSION; |
| 308 | reg = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 309 | reg |= MUSB_DEVCTL_SESSION; |
| 310 | musb_writeb(musb->mregs, MUSB_DEVCTL, reg); |
| 311 | break; |
| 312 | default: |
| 313 | break; |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | return count; |
| 318 | } |
| 319 | |
| 320 | /* |
| 321 | * In host mode, connect/disconnect the bus without physically |
| 322 | * remove the devices. |
| 323 | */ |
| 324 | static const struct file_operations musb_softconnect_fops = { |
| 325 | .open = musb_softconnect_open, |
| 326 | .write = musb_softconnect_write, |
| 327 | .read = seq_read, |
| 328 | .llseek = seq_lseek, |
| 329 | .release = single_release, |
| 330 | }; |
| 331 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 332 | int musb_init_debugfs(struct musb *musb) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 333 | { |
| 334 | struct dentry *root; |
| 335 | struct dentry *file; |
| 336 | int ret; |
| 337 | |
Ajay Kumar Gupta | 8d2421e | 2012-08-31 11:09:50 +0000 | [diff] [blame] | 338 | root = debugfs_create_dir(dev_name(musb->controller), NULL); |
Felipe Balbi | 6c2abcd | 2012-01-31 14:19:00 +0200 | [diff] [blame] | 339 | if (!root) { |
| 340 | ret = -ENOMEM; |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 341 | goto err0; |
| 342 | } |
| 343 | |
| 344 | file = debugfs_create_file("regdump", S_IRUGO, root, musb, |
| 345 | &musb_regdump_fops); |
Felipe Balbi | 6c2abcd | 2012-01-31 14:19:00 +0200 | [diff] [blame] | 346 | if (!file) { |
| 347 | ret = -ENOMEM; |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 348 | goto err1; |
| 349 | } |
| 350 | |
| 351 | file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, |
| 352 | root, musb, &musb_test_mode_fops); |
Felipe Balbi | 6c2abcd | 2012-01-31 14:19:00 +0200 | [diff] [blame] | 353 | if (!file) { |
| 354 | ret = -ENOMEM; |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 355 | goto err1; |
| 356 | } |
| 357 | |
Bin Liu | ffc1d299 | 2015-03-24 15:19:56 -0500 | [diff] [blame] | 358 | file = debugfs_create_file("softconnect", S_IRUGO | S_IWUSR, |
| 359 | root, musb, &musb_softconnect_fops); |
| 360 | if (!file) { |
| 361 | ret = -ENOMEM; |
| 362 | goto err1; |
| 363 | } |
| 364 | |
Ajay Kumar Gupta | 8d2421e | 2012-08-31 11:09:50 +0000 | [diff] [blame] | 365 | musb->debugfs_root = root; |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 366 | |
| 367 | return 0; |
| 368 | |
| 369 | err1: |
| 370 | debugfs_remove_recursive(root); |
| 371 | |
| 372 | err0: |
| 373 | return ret; |
| 374 | } |
| 375 | |
Felipe Balbi | b0f9da7 | 2010-03-25 13:25:18 +0200 | [diff] [blame] | 376 | void /* __init_or_exit */ musb_exit_debugfs(struct musb *musb) |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 377 | { |
Ajay Kumar Gupta | 8d2421e | 2012-08-31 11:09:50 +0000 | [diff] [blame] | 378 | debugfs_remove_recursive(musb->debugfs_root); |
Felipe Balbi | 7f7f9e2 | 2010-03-12 10:29:11 +0200 | [diff] [blame] | 379 | } |