| /** | |
| * debugfs.c - DesignWare USB3 DRD Controller DebugFS file | |
| * | |
| * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com | |
| * | |
| * Authors: Felipe Balbi <balbi@ti.com>, | |
| * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions | |
| * are met: | |
| * 1. Redistributions of source code must retain the above copyright | |
| * notice, this list of conditions, and the following disclaimer, | |
| * without modification. | |
| * 2. Redistributions in binary form must reproduce the above copyright | |
| * notice, this list of conditions and the following disclaimer in the | |
| * documentation and/or other materials provided with the distribution. | |
| * 3. The names of the above-listed copyright holders may not be used | |
| * to endorse or promote products derived from this software without | |
| * specific prior written permission. | |
| * | |
| * ALTERNATIVELY, this software may be distributed under the terms of the | |
| * GNU General Public License ("GPL") version 2, as published by the Free | |
| * Software Foundation. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
| * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| */ | |
| #include <linux/kernel.h> | |
| #include <linux/slab.h> | |
| #include <linux/ptrace.h> | |
| #include <linux/types.h> | |
| #include <linux/spinlock.h> | |
| #include <linux/debugfs.h> | |
| #include <linux/seq_file.h> | |
| #include <linux/delay.h> | |
| #include <linux/uaccess.h> | |
| #include <linux/usb/ch9.h> | |
| #include "core.h" | |
| #include "gadget.h" | |
| #include "io.h" | |
| #include "debug.h" | |
| #define dump_register(nm) \ | |
| { \ | |
| .name = __stringify(nm), \ | |
| .offset = DWC3_ ##nm - DWC3_GLOBALS_REGS_START, \ | |
| } | |
| static struct debugfs_reg32 dwc3_regs[] = { | |
| dump_register(GSBUSCFG0), | |
| dump_register(GSBUSCFG1), | |
| dump_register(GTXTHRCFG), | |
| dump_register(GRXTHRCFG), | |
| dump_register(GCTL), | |
| dump_register(GEVTEN), | |
| dump_register(GSTS), | |
| dump_register(GSNPSID), | |
| dump_register(GGPIO), | |
| dump_register(GUID), | |
| dump_register(GUCTL), | |
| dump_register(GBUSERRADDR0), | |
| dump_register(GBUSERRADDR1), | |
| dump_register(GPRTBIMAP0), | |
| dump_register(GPRTBIMAP1), | |
| dump_register(GHWPARAMS0), | |
| dump_register(GHWPARAMS1), | |
| dump_register(GHWPARAMS2), | |
| dump_register(GHWPARAMS3), | |
| dump_register(GHWPARAMS4), | |
| dump_register(GHWPARAMS5), | |
| dump_register(GHWPARAMS6), | |
| dump_register(GHWPARAMS7), | |
| dump_register(GDBGFIFOSPACE), | |
| dump_register(GDBGLTSSM), | |
| dump_register(GPRTBIMAP_HS0), | |
| dump_register(GPRTBIMAP_HS1), | |
| dump_register(GPRTBIMAP_FS0), | |
| dump_register(GPRTBIMAP_FS1), | |
| dump_register(GUSB2PHYCFG(0)), | |
| dump_register(GUSB2PHYCFG(1)), | |
| dump_register(GUSB2PHYCFG(2)), | |
| dump_register(GUSB2PHYCFG(3)), | |
| dump_register(GUSB2PHYCFG(4)), | |
| dump_register(GUSB2PHYCFG(5)), | |
| dump_register(GUSB2PHYCFG(6)), | |
| dump_register(GUSB2PHYCFG(7)), | |
| dump_register(GUSB2PHYCFG(8)), | |
| dump_register(GUSB2PHYCFG(9)), | |
| dump_register(GUSB2PHYCFG(10)), | |
| dump_register(GUSB2PHYCFG(11)), | |
| dump_register(GUSB2PHYCFG(12)), | |
| dump_register(GUSB2PHYCFG(13)), | |
| dump_register(GUSB2PHYCFG(14)), | |
| dump_register(GUSB2PHYCFG(15)), | |
| dump_register(GUSB2I2CCTL(0)), | |
| dump_register(GUSB2I2CCTL(1)), | |
| dump_register(GUSB2I2CCTL(2)), | |
| dump_register(GUSB2I2CCTL(3)), | |
| dump_register(GUSB2I2CCTL(4)), | |
| dump_register(GUSB2I2CCTL(5)), | |
| dump_register(GUSB2I2CCTL(6)), | |
| dump_register(GUSB2I2CCTL(7)), | |
| dump_register(GUSB2I2CCTL(8)), | |
| dump_register(GUSB2I2CCTL(9)), | |
| dump_register(GUSB2I2CCTL(10)), | |
| dump_register(GUSB2I2CCTL(11)), | |
| dump_register(GUSB2I2CCTL(12)), | |
| dump_register(GUSB2I2CCTL(13)), | |
| dump_register(GUSB2I2CCTL(14)), | |
| dump_register(GUSB2I2CCTL(15)), | |
| dump_register(GUSB2PHYACC(0)), | |
| dump_register(GUSB2PHYACC(1)), | |
| dump_register(GUSB2PHYACC(2)), | |
| dump_register(GUSB2PHYACC(3)), | |
| dump_register(GUSB2PHYACC(4)), | |
| dump_register(GUSB2PHYACC(5)), | |
| dump_register(GUSB2PHYACC(6)), | |
| dump_register(GUSB2PHYACC(7)), | |
| dump_register(GUSB2PHYACC(8)), | |
| dump_register(GUSB2PHYACC(9)), | |
| dump_register(GUSB2PHYACC(10)), | |
| dump_register(GUSB2PHYACC(11)), | |
| dump_register(GUSB2PHYACC(12)), | |
| dump_register(GUSB2PHYACC(13)), | |
| dump_register(GUSB2PHYACC(14)), | |
| dump_register(GUSB2PHYACC(15)), | |
| dump_register(GUSB3PIPECTL(0)), | |
| dump_register(GUSB3PIPECTL(1)), | |
| dump_register(GUSB3PIPECTL(2)), | |
| dump_register(GUSB3PIPECTL(3)), | |
| dump_register(GUSB3PIPECTL(4)), | |
| dump_register(GUSB3PIPECTL(5)), | |
| dump_register(GUSB3PIPECTL(6)), | |
| dump_register(GUSB3PIPECTL(7)), | |
| dump_register(GUSB3PIPECTL(8)), | |
| dump_register(GUSB3PIPECTL(9)), | |
| dump_register(GUSB3PIPECTL(10)), | |
| dump_register(GUSB3PIPECTL(11)), | |
| dump_register(GUSB3PIPECTL(12)), | |
| dump_register(GUSB3PIPECTL(13)), | |
| dump_register(GUSB3PIPECTL(14)), | |
| dump_register(GUSB3PIPECTL(15)), | |
| dump_register(GTXFIFOSIZ(0)), | |
| dump_register(GTXFIFOSIZ(1)), | |
| dump_register(GTXFIFOSIZ(2)), | |
| dump_register(GTXFIFOSIZ(3)), | |
| dump_register(GTXFIFOSIZ(4)), | |
| dump_register(GTXFIFOSIZ(5)), | |
| dump_register(GTXFIFOSIZ(6)), | |
| dump_register(GTXFIFOSIZ(7)), | |
| dump_register(GTXFIFOSIZ(8)), | |
| dump_register(GTXFIFOSIZ(9)), | |
| dump_register(GTXFIFOSIZ(10)), | |
| dump_register(GTXFIFOSIZ(11)), | |
| dump_register(GTXFIFOSIZ(12)), | |
| dump_register(GTXFIFOSIZ(13)), | |
| dump_register(GTXFIFOSIZ(14)), | |
| dump_register(GTXFIFOSIZ(15)), | |
| dump_register(GTXFIFOSIZ(16)), | |
| dump_register(GTXFIFOSIZ(17)), | |
| dump_register(GTXFIFOSIZ(18)), | |
| dump_register(GTXFIFOSIZ(19)), | |
| dump_register(GTXFIFOSIZ(20)), | |
| dump_register(GTXFIFOSIZ(21)), | |
| dump_register(GTXFIFOSIZ(22)), | |
| dump_register(GTXFIFOSIZ(23)), | |
| dump_register(GTXFIFOSIZ(24)), | |
| dump_register(GTXFIFOSIZ(25)), | |
| dump_register(GTXFIFOSIZ(26)), | |
| dump_register(GTXFIFOSIZ(27)), | |
| dump_register(GTXFIFOSIZ(28)), | |
| dump_register(GTXFIFOSIZ(29)), | |
| dump_register(GTXFIFOSIZ(30)), | |
| dump_register(GTXFIFOSIZ(31)), | |
| dump_register(GRXFIFOSIZ(0)), | |
| dump_register(GRXFIFOSIZ(1)), | |
| dump_register(GRXFIFOSIZ(2)), | |
| dump_register(GRXFIFOSIZ(3)), | |
| dump_register(GRXFIFOSIZ(4)), | |
| dump_register(GRXFIFOSIZ(5)), | |
| dump_register(GRXFIFOSIZ(6)), | |
| dump_register(GRXFIFOSIZ(7)), | |
| dump_register(GRXFIFOSIZ(8)), | |
| dump_register(GRXFIFOSIZ(9)), | |
| dump_register(GRXFIFOSIZ(10)), | |
| dump_register(GRXFIFOSIZ(11)), | |
| dump_register(GRXFIFOSIZ(12)), | |
| dump_register(GRXFIFOSIZ(13)), | |
| dump_register(GRXFIFOSIZ(14)), | |
| dump_register(GRXFIFOSIZ(15)), | |
| dump_register(GRXFIFOSIZ(16)), | |
| dump_register(GRXFIFOSIZ(17)), | |
| dump_register(GRXFIFOSIZ(18)), | |
| dump_register(GRXFIFOSIZ(19)), | |
| dump_register(GRXFIFOSIZ(20)), | |
| dump_register(GRXFIFOSIZ(21)), | |
| dump_register(GRXFIFOSIZ(22)), | |
| dump_register(GRXFIFOSIZ(23)), | |
| dump_register(GRXFIFOSIZ(24)), | |
| dump_register(GRXFIFOSIZ(25)), | |
| dump_register(GRXFIFOSIZ(26)), | |
| dump_register(GRXFIFOSIZ(27)), | |
| dump_register(GRXFIFOSIZ(28)), | |
| dump_register(GRXFIFOSIZ(29)), | |
| dump_register(GRXFIFOSIZ(30)), | |
| dump_register(GRXFIFOSIZ(31)), | |
| dump_register(GEVNTADRLO(0)), | |
| dump_register(GEVNTADRHI(0)), | |
| dump_register(GEVNTSIZ(0)), | |
| dump_register(GEVNTCOUNT(0)), | |
| dump_register(GHWPARAMS8), | |
| dump_register(DCFG), | |
| dump_register(DCTL), | |
| dump_register(DEVTEN), | |
| dump_register(DSTS), | |
| dump_register(DGCMDPAR), | |
| dump_register(DGCMD), | |
| dump_register(DALEPENA), | |
| dump_register(DEPCMDPAR2(0)), | |
| dump_register(DEPCMDPAR2(1)), | |
| dump_register(DEPCMDPAR2(2)), | |
| dump_register(DEPCMDPAR2(3)), | |
| dump_register(DEPCMDPAR2(4)), | |
| dump_register(DEPCMDPAR2(5)), | |
| dump_register(DEPCMDPAR2(6)), | |
| dump_register(DEPCMDPAR2(7)), | |
| dump_register(DEPCMDPAR2(8)), | |
| dump_register(DEPCMDPAR2(9)), | |
| dump_register(DEPCMDPAR2(10)), | |
| dump_register(DEPCMDPAR2(11)), | |
| dump_register(DEPCMDPAR2(12)), | |
| dump_register(DEPCMDPAR2(13)), | |
| dump_register(DEPCMDPAR2(14)), | |
| dump_register(DEPCMDPAR2(15)), | |
| dump_register(DEPCMDPAR2(16)), | |
| dump_register(DEPCMDPAR2(17)), | |
| dump_register(DEPCMDPAR2(18)), | |
| dump_register(DEPCMDPAR2(19)), | |
| dump_register(DEPCMDPAR2(20)), | |
| dump_register(DEPCMDPAR2(21)), | |
| dump_register(DEPCMDPAR2(22)), | |
| dump_register(DEPCMDPAR2(23)), | |
| dump_register(DEPCMDPAR2(24)), | |
| dump_register(DEPCMDPAR2(25)), | |
| dump_register(DEPCMDPAR2(26)), | |
| dump_register(DEPCMDPAR2(27)), | |
| dump_register(DEPCMDPAR2(28)), | |
| dump_register(DEPCMDPAR2(29)), | |
| dump_register(DEPCMDPAR2(30)), | |
| dump_register(DEPCMDPAR2(31)), | |
| dump_register(DEPCMDPAR1(0)), | |
| dump_register(DEPCMDPAR1(1)), | |
| dump_register(DEPCMDPAR1(2)), | |
| dump_register(DEPCMDPAR1(3)), | |
| dump_register(DEPCMDPAR1(4)), | |
| dump_register(DEPCMDPAR1(5)), | |
| dump_register(DEPCMDPAR1(6)), | |
| dump_register(DEPCMDPAR1(7)), | |
| dump_register(DEPCMDPAR1(8)), | |
| dump_register(DEPCMDPAR1(9)), | |
| dump_register(DEPCMDPAR1(10)), | |
| dump_register(DEPCMDPAR1(11)), | |
| dump_register(DEPCMDPAR1(12)), | |
| dump_register(DEPCMDPAR1(13)), | |
| dump_register(DEPCMDPAR1(14)), | |
| dump_register(DEPCMDPAR1(15)), | |
| dump_register(DEPCMDPAR1(16)), | |
| dump_register(DEPCMDPAR1(17)), | |
| dump_register(DEPCMDPAR1(18)), | |
| dump_register(DEPCMDPAR1(19)), | |
| dump_register(DEPCMDPAR1(20)), | |
| dump_register(DEPCMDPAR1(21)), | |
| dump_register(DEPCMDPAR1(22)), | |
| dump_register(DEPCMDPAR1(23)), | |
| dump_register(DEPCMDPAR1(24)), | |
| dump_register(DEPCMDPAR1(25)), | |
| dump_register(DEPCMDPAR1(26)), | |
| dump_register(DEPCMDPAR1(27)), | |
| dump_register(DEPCMDPAR1(28)), | |
| dump_register(DEPCMDPAR1(29)), | |
| dump_register(DEPCMDPAR1(30)), | |
| dump_register(DEPCMDPAR1(31)), | |
| dump_register(DEPCMDPAR0(0)), | |
| dump_register(DEPCMDPAR0(1)), | |
| dump_register(DEPCMDPAR0(2)), | |
| dump_register(DEPCMDPAR0(3)), | |
| dump_register(DEPCMDPAR0(4)), | |
| dump_register(DEPCMDPAR0(5)), | |
| dump_register(DEPCMDPAR0(6)), | |
| dump_register(DEPCMDPAR0(7)), | |
| dump_register(DEPCMDPAR0(8)), | |
| dump_register(DEPCMDPAR0(9)), | |
| dump_register(DEPCMDPAR0(10)), | |
| dump_register(DEPCMDPAR0(11)), | |
| dump_register(DEPCMDPAR0(12)), | |
| dump_register(DEPCMDPAR0(13)), | |
| dump_register(DEPCMDPAR0(14)), | |
| dump_register(DEPCMDPAR0(15)), | |
| dump_register(DEPCMDPAR0(16)), | |
| dump_register(DEPCMDPAR0(17)), | |
| dump_register(DEPCMDPAR0(18)), | |
| dump_register(DEPCMDPAR0(19)), | |
| dump_register(DEPCMDPAR0(20)), | |
| dump_register(DEPCMDPAR0(21)), | |
| dump_register(DEPCMDPAR0(22)), | |
| dump_register(DEPCMDPAR0(23)), | |
| dump_register(DEPCMDPAR0(24)), | |
| dump_register(DEPCMDPAR0(25)), | |
| dump_register(DEPCMDPAR0(26)), | |
| dump_register(DEPCMDPAR0(27)), | |
| dump_register(DEPCMDPAR0(28)), | |
| dump_register(DEPCMDPAR0(29)), | |
| dump_register(DEPCMDPAR0(30)), | |
| dump_register(DEPCMDPAR0(31)), | |
| dump_register(DEPCMD(0)), | |
| dump_register(DEPCMD(1)), | |
| dump_register(DEPCMD(2)), | |
| dump_register(DEPCMD(3)), | |
| dump_register(DEPCMD(4)), | |
| dump_register(DEPCMD(5)), | |
| dump_register(DEPCMD(6)), | |
| dump_register(DEPCMD(7)), | |
| dump_register(DEPCMD(8)), | |
| dump_register(DEPCMD(9)), | |
| dump_register(DEPCMD(10)), | |
| dump_register(DEPCMD(11)), | |
| dump_register(DEPCMD(12)), | |
| dump_register(DEPCMD(13)), | |
| dump_register(DEPCMD(14)), | |
| dump_register(DEPCMD(15)), | |
| dump_register(DEPCMD(16)), | |
| dump_register(DEPCMD(17)), | |
| dump_register(DEPCMD(18)), | |
| dump_register(DEPCMD(19)), | |
| dump_register(DEPCMD(20)), | |
| dump_register(DEPCMD(21)), | |
| dump_register(DEPCMD(22)), | |
| dump_register(DEPCMD(23)), | |
| dump_register(DEPCMD(24)), | |
| dump_register(DEPCMD(25)), | |
| dump_register(DEPCMD(26)), | |
| dump_register(DEPCMD(27)), | |
| dump_register(DEPCMD(28)), | |
| dump_register(DEPCMD(29)), | |
| dump_register(DEPCMD(30)), | |
| dump_register(DEPCMD(31)), | |
| dump_register(OCFG), | |
| dump_register(OCTL), | |
| dump_register(OEVTEN), | |
| dump_register(OSTS), | |
| }; | |
| static int dwc3_mode_show(struct seq_file *s, void *unused) | |
| { | |
| struct dwc3 *dwc = s->private; | |
| unsigned long flags; | |
| u32 reg; | |
| spin_lock_irqsave(&dwc->lock, flags); | |
| reg = dwc3_readl(dwc->regs, DWC3_GCTL); | |
| spin_unlock_irqrestore(&dwc->lock, flags); | |
| switch (DWC3_GCTL_PRTCAP(reg)) { | |
| case DWC3_GCTL_PRTCAP_HOST: | |
| seq_printf(s, "host\n"); | |
| break; | |
| case DWC3_GCTL_PRTCAP_DEVICE: | |
| seq_printf(s, "device\n"); | |
| break; | |
| case DWC3_GCTL_PRTCAP_OTG: | |
| seq_printf(s, "OTG\n"); | |
| break; | |
| default: | |
| seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg)); | |
| } | |
| return 0; | |
| } | |
| static int dwc3_mode_open(struct inode *inode, struct file *file) | |
| { | |
| return single_open(file, dwc3_mode_show, inode->i_private); | |
| } | |
| static ssize_t dwc3_mode_write(struct file *file, | |
| const char __user *ubuf, size_t count, loff_t *ppos) | |
| { | |
| struct seq_file *s = file->private_data; | |
| struct dwc3 *dwc = s->private; | |
| unsigned long flags; | |
| u32 mode = 0; | |
| char buf[32]; | |
| if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
| return -EFAULT; | |
| if (!strncmp(buf, "host", 4)) | |
| mode |= DWC3_GCTL_PRTCAP_HOST; | |
| if (!strncmp(buf, "device", 6)) | |
| mode |= DWC3_GCTL_PRTCAP_DEVICE; | |
| if (!strncmp(buf, "otg", 3)) | |
| mode |= DWC3_GCTL_PRTCAP_OTG; | |
| if (mode) { | |
| spin_lock_irqsave(&dwc->lock, flags); | |
| dwc3_set_mode(dwc, mode); | |
| spin_unlock_irqrestore(&dwc->lock, flags); | |
| } | |
| return count; | |
| } | |
| static const struct file_operations dwc3_mode_fops = { | |
| .open = dwc3_mode_open, | |
| .write = dwc3_mode_write, | |
| .read = seq_read, | |
| .llseek = seq_lseek, | |
| .release = single_release, | |
| }; | |
| static int dwc3_testmode_show(struct seq_file *s, void *unused) | |
| { | |
| struct dwc3 *dwc = s->private; | |
| unsigned long flags; | |
| u32 reg; | |
| spin_lock_irqsave(&dwc->lock, flags); | |
| reg = dwc3_readl(dwc->regs, DWC3_DCTL); | |
| reg &= DWC3_DCTL_TSTCTRL_MASK; | |
| reg >>= 1; | |
| spin_unlock_irqrestore(&dwc->lock, flags); | |
| switch (reg) { | |
| case 0: | |
| seq_printf(s, "no test\n"); | |
| break; | |
| case TEST_J: | |
| seq_printf(s, "test_j\n"); | |
| break; | |
| case TEST_K: | |
| seq_printf(s, "test_k\n"); | |
| break; | |
| case TEST_SE0_NAK: | |
| seq_printf(s, "test_se0_nak\n"); | |
| break; | |
| case TEST_PACKET: | |
| seq_printf(s, "test_packet\n"); | |
| break; | |
| case TEST_FORCE_EN: | |
| seq_printf(s, "test_force_enable\n"); | |
| break; | |
| default: | |
| seq_printf(s, "UNKNOWN %d\n", reg); | |
| } | |
| return 0; | |
| } | |
| static int dwc3_testmode_open(struct inode *inode, struct file *file) | |
| { | |
| return single_open(file, dwc3_testmode_show, inode->i_private); | |
| } | |
| static ssize_t dwc3_testmode_write(struct file *file, | |
| const char __user *ubuf, size_t count, loff_t *ppos) | |
| { | |
| struct seq_file *s = file->private_data; | |
| struct dwc3 *dwc = s->private; | |
| unsigned long flags; | |
| u32 testmode = 0; | |
| char buf[32]; | |
| if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
| return -EFAULT; | |
| if (!strncmp(buf, "test_j", 6)) | |
| testmode = TEST_J; | |
| else if (!strncmp(buf, "test_k", 6)) | |
| testmode = TEST_K; | |
| else if (!strncmp(buf, "test_se0_nak", 12)) | |
| testmode = TEST_SE0_NAK; | |
| else if (!strncmp(buf, "test_packet", 11)) | |
| testmode = TEST_PACKET; | |
| else if (!strncmp(buf, "test_force_enable", 17)) | |
| testmode = TEST_FORCE_EN; | |
| else | |
| testmode = 0; | |
| spin_lock_irqsave(&dwc->lock, flags); | |
| dwc3_gadget_set_test_mode(dwc, testmode); | |
| spin_unlock_irqrestore(&dwc->lock, flags); | |
| return count; | |
| } | |
| static const struct file_operations dwc3_testmode_fops = { | |
| .open = dwc3_testmode_open, | |
| .write = dwc3_testmode_write, | |
| .read = seq_read, | |
| .llseek = seq_lseek, | |
| .release = single_release, | |
| }; | |
| static int dwc3_link_state_show(struct seq_file *s, void *unused) | |
| { | |
| struct dwc3 *dwc = s->private; | |
| unsigned long flags; | |
| enum dwc3_link_state state; | |
| u32 reg; | |
| spin_lock_irqsave(&dwc->lock, flags); | |
| reg = dwc3_readl(dwc->regs, DWC3_DSTS); | |
| state = DWC3_DSTS_USBLNKST(reg); | |
| spin_unlock_irqrestore(&dwc->lock, flags); | |
| switch (state) { | |
| case DWC3_LINK_STATE_U0: | |
| seq_printf(s, "U0\n"); | |
| break; | |
| case DWC3_LINK_STATE_U1: | |
| seq_printf(s, "U1\n"); | |
| break; | |
| case DWC3_LINK_STATE_U2: | |
| seq_printf(s, "U2\n"); | |
| break; | |
| case DWC3_LINK_STATE_U3: | |
| seq_printf(s, "U3\n"); | |
| break; | |
| case DWC3_LINK_STATE_SS_DIS: | |
| seq_printf(s, "SS.Disabled\n"); | |
| break; | |
| case DWC3_LINK_STATE_RX_DET: | |
| seq_printf(s, "Rx.Detect\n"); | |
| break; | |
| case DWC3_LINK_STATE_SS_INACT: | |
| seq_printf(s, "SS.Inactive\n"); | |
| break; | |
| case DWC3_LINK_STATE_POLL: | |
| seq_printf(s, "Poll\n"); | |
| break; | |
| case DWC3_LINK_STATE_RECOV: | |
| seq_printf(s, "Recovery\n"); | |
| break; | |
| case DWC3_LINK_STATE_HRESET: | |
| seq_printf(s, "HRESET\n"); | |
| break; | |
| case DWC3_LINK_STATE_CMPLY: | |
| seq_printf(s, "Compliance\n"); | |
| break; | |
| case DWC3_LINK_STATE_LPBK: | |
| seq_printf(s, "Loopback\n"); | |
| break; | |
| default: | |
| seq_printf(s, "UNKNOWN %d\n", reg); | |
| } | |
| return 0; | |
| } | |
| static int dwc3_link_state_open(struct inode *inode, struct file *file) | |
| { | |
| return single_open(file, dwc3_link_state_show, inode->i_private); | |
| } | |
| static ssize_t dwc3_link_state_write(struct file *file, | |
| const char __user *ubuf, size_t count, loff_t *ppos) | |
| { | |
| struct seq_file *s = file->private_data; | |
| struct dwc3 *dwc = s->private; | |
| unsigned long flags; | |
| enum dwc3_link_state state = 0; | |
| char buf[32]; | |
| if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
| return -EFAULT; | |
| if (!strncmp(buf, "SS.Disabled", 11)) | |
| state = DWC3_LINK_STATE_SS_DIS; | |
| else if (!strncmp(buf, "Rx.Detect", 9)) | |
| state = DWC3_LINK_STATE_RX_DET; | |
| else if (!strncmp(buf, "SS.Inactive", 11)) | |
| state = DWC3_LINK_STATE_SS_INACT; | |
| else if (!strncmp(buf, "Recovery", 8)) | |
| state = DWC3_LINK_STATE_RECOV; | |
| else if (!strncmp(buf, "Compliance", 10)) | |
| state = DWC3_LINK_STATE_CMPLY; | |
| else if (!strncmp(buf, "Loopback", 8)) | |
| state = DWC3_LINK_STATE_LPBK; | |
| else | |
| return -EINVAL; | |
| spin_lock_irqsave(&dwc->lock, flags); | |
| dwc3_gadget_set_link_state(dwc, state); | |
| spin_unlock_irqrestore(&dwc->lock, flags); | |
| return count; | |
| } | |
| static const struct file_operations dwc3_link_state_fops = { | |
| .open = dwc3_link_state_open, | |
| .write = dwc3_link_state_write, | |
| .read = seq_read, | |
| .llseek = seq_lseek, | |
| .release = single_release, | |
| }; | |
| int dwc3_debugfs_init(struct dwc3 *dwc) | |
| { | |
| struct dentry *root; | |
| struct dentry *file; | |
| int ret; | |
| root = debugfs_create_dir(dev_name(dwc->dev), NULL); | |
| if (!root) { | |
| ret = -ENOMEM; | |
| goto err0; | |
| } | |
| dwc->root = root; | |
| dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); | |
| if (!dwc->regset) { | |
| ret = -ENOMEM; | |
| goto err1; | |
| } | |
| dwc->regset->regs = dwc3_regs; | |
| dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); | |
| dwc->regset->base = dwc->regs; | |
| file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); | |
| if (!file) { | |
| ret = -ENOMEM; | |
| goto err1; | |
| } | |
| #if IS_ENABLED(CONFIG_USB_DWC3_GADGET) | |
| file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, | |
| dwc, &dwc3_mode_fops); | |
| if (!file) { | |
| ret = -ENOMEM; | |
| goto err1; | |
| } | |
| file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, | |
| dwc, &dwc3_testmode_fops); | |
| if (!file) { | |
| ret = -ENOMEM; | |
| goto err1; | |
| } | |
| file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root, | |
| dwc, &dwc3_link_state_fops); | |
| if (!file) { | |
| ret = -ENOMEM; | |
| goto err1; | |
| } | |
| #endif | |
| return 0; | |
| err1: | |
| debugfs_remove_recursive(root); | |
| err0: | |
| return ret; | |
| } | |
| void dwc3_debugfs_exit(struct dwc3 *dwc) | |
| { | |
| debugfs_remove_recursive(dwc->root); | |
| dwc->root = NULL; | |
| } |