2 * MUSB OTG driver debugfs support
4 * Copyright 2010 Nokia Corporation
5 * Contact: Felipe Balbi <felipe.balbi@nokia.com>
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.
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.
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
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.
34 #include <linux/module.h>
35 #include <linux/kernel.h>
36 #include <linux/init.h>
37 #include <linux/debugfs.h>
38 #include <linux/seq_file.h>
40 #include <asm/uaccess.h>
42 #include "musb_core.h"
43 #include "musb_debug.h"
45 struct musb_register_map {
51 static const struct musb_register_map musb_regmap[] = {
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 },
62 { "ConfigData", MUSB_CONFIGDATA,8 },
63 { "IntrRxE", MUSB_INTRRXE, 16 },
64 { "IntrTxE", MUSB_INTRTXE, 16 },
65 { "IntrUsbE", MUSB_INTRUSBE, 8 },
66 { "DevCtl", MUSB_DEVCTL, 8 },
67 { "BabbleCtl", MUSB_BABBLE_CTL,8 },
68 { "TxFIFOsz", MUSB_TXFIFOSZ, 8 },
69 { "RxFIFOsz", MUSB_RXFIFOSZ, 8 },
70 { "TxFIFOadd", MUSB_TXFIFOADD, 16 },
71 { "RxFIFOadd", MUSB_RXFIFOADD, 16 },
72 { "VControl", 0x68, 32 },
73 { "HWVers", 0x69, 16 },
74 { "EPInfo", MUSB_EPINFO, 8 },
75 { "RAMInfo", MUSB_RAMINFO, 8 },
76 { "LinkInfo", MUSB_LINKINFO, 8 },
77 { "VPLen", MUSB_VPLEN, 8 },
78 { "HS_EOF1", MUSB_HS_EOF1, 8 },
79 { "FS_EOF1", MUSB_FS_EOF1, 8 },
80 { "LS_EOF1", MUSB_LS_EOF1, 8 },
81 { "SOFT_RST", 0x7F, 8 },
82 { "DMA_CNTLch0", 0x204, 16 },
83 { "DMA_ADDRch0", 0x208, 32 },
84 { "DMA_COUNTch0", 0x20C, 32 },
85 { "DMA_CNTLch1", 0x214, 16 },
86 { "DMA_ADDRch1", 0x218, 32 },
87 { "DMA_COUNTch1", 0x21C, 32 },
88 { "DMA_CNTLch2", 0x224, 16 },
89 { "DMA_ADDRch2", 0x228, 32 },
90 { "DMA_COUNTch2", 0x22C, 32 },
91 { "DMA_CNTLch3", 0x234, 16 },
92 { "DMA_ADDRch3", 0x238, 32 },
93 { "DMA_COUNTch3", 0x23C, 32 },
94 { "DMA_CNTLch4", 0x244, 16 },
95 { "DMA_ADDRch4", 0x248, 32 },
96 { "DMA_COUNTch4", 0x24C, 32 },
97 { "DMA_CNTLch5", 0x254, 16 },
98 { "DMA_ADDRch5", 0x258, 32 },
99 { "DMA_COUNTch5", 0x25C, 32 },
100 { "DMA_CNTLch6", 0x264, 16 },
101 { "DMA_ADDRch6", 0x268, 32 },
102 { "DMA_COUNTch6", 0x26C, 32 },
103 { "DMA_CNTLch7", 0x274, 16 },
104 { "DMA_ADDRch7", 0x278, 32 },
105 { "DMA_COUNTch7", 0x27C, 32 },
106 { } /* Terminating Entry */
109 static int musb_regdump_show(struct seq_file *s, void *unused)
111 struct musb *musb = s->private;
114 seq_printf(s, "MUSB (M)HDRC Register Dump\n");
116 for (i = 0; i < ARRAY_SIZE(musb_regmap); i++) {
117 switch (musb_regmap[i].size) {
119 seq_printf(s, "%-12s: %02x\n", musb_regmap[i].name,
120 musb_readb(musb->mregs, musb_regmap[i].offset));
123 seq_printf(s, "%-12s: %04x\n", musb_regmap[i].name,
124 musb_readw(musb->mregs, musb_regmap[i].offset));
127 seq_printf(s, "%-12s: %08x\n", musb_regmap[i].name,
128 musb_readl(musb->mregs, musb_regmap[i].offset));
136 static int musb_regdump_open(struct inode *inode, struct file *file)
138 return single_open(file, musb_regdump_show, inode->i_private);
141 static int musb_test_mode_show(struct seq_file *s, void *unused)
143 struct musb *musb = s->private;
146 test = musb_readb(musb->mregs, MUSB_TESTMODE);
148 if (test & MUSB_TEST_FORCE_HOST)
149 seq_printf(s, "force host\n");
151 if (test & MUSB_TEST_FIFO_ACCESS)
152 seq_printf(s, "fifo access\n");
154 if (test & MUSB_TEST_FORCE_FS)
155 seq_printf(s, "force full-speed\n");
157 if (test & MUSB_TEST_FORCE_HS)
158 seq_printf(s, "force high-speed\n");
160 if (test & MUSB_TEST_PACKET)
161 seq_printf(s, "test packet\n");
163 if (test & MUSB_TEST_K)
164 seq_printf(s, "test K\n");
166 if (test & MUSB_TEST_J)
167 seq_printf(s, "test J\n");
169 if (test & MUSB_TEST_SE0_NAK)
170 seq_printf(s, "test SE0 NAK\n");
175 static const struct file_operations musb_regdump_fops = {
176 .open = musb_regdump_open,
179 .release = single_release,
182 static int musb_test_mode_open(struct inode *inode, struct file *file)
184 return single_open(file, musb_test_mode_show, inode->i_private);
187 static ssize_t musb_test_mode_write(struct file *file,
188 const char __user *ubuf, size_t count, loff_t *ppos)
190 struct seq_file *s = file->private_data;
191 struct musb *musb = s->private;
195 memset(buf, 0x00, sizeof(buf));
197 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
200 if (!strncmp(buf, "force host", 9))
201 test = MUSB_TEST_FORCE_HOST;
203 if (!strncmp(buf, "fifo access", 11))
204 test = MUSB_TEST_FIFO_ACCESS;
206 if (!strncmp(buf, "force full-speed", 15))
207 test = MUSB_TEST_FORCE_FS;
209 if (!strncmp(buf, "force high-speed", 15))
210 test = MUSB_TEST_FORCE_HS;
212 if (!strncmp(buf, "test packet", 10)) {
213 test = MUSB_TEST_PACKET;
214 musb_load_testpacket(musb);
217 if (!strncmp(buf, "test K", 6))
220 if (!strncmp(buf, "test J", 6))
223 if (!strncmp(buf, "test SE0 NAK", 12))
224 test = MUSB_TEST_SE0_NAK;
226 musb_writeb(musb->mregs, MUSB_TESTMODE, test);
231 static const struct file_operations musb_test_mode_fops = {
232 .open = musb_test_mode_open,
233 .write = musb_test_mode_write,
236 .release = single_release,
239 int musb_init_debugfs(struct musb *musb)
245 root = debugfs_create_dir(dev_name(musb->controller), NULL);
251 file = debugfs_create_file("regdump", S_IRUGO, root, musb,
258 file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR,
259 root, musb, &musb_test_mode_fops);
265 musb->debugfs_root = root;
270 debugfs_remove_recursive(root);
276 void /* __init_or_exit */ musb_exit_debugfs(struct musb *musb)
278 debugfs_remove_recursive(musb->debugfs_root);