| /** |
| * 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, \ |
| } |
| |
| static const 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_regdump_show(struct seq_file *s, void *unused) |
| { |
| struct dwc3 *dwc = s->private; |
| |
| seq_printf(s, "DesignWare USB3 Core Register Dump\n"); |
| debugfs_print_regs32(s, dwc3_regs, ARRAY_SIZE(dwc3_regs), |
| dwc->regs, ""); |
| return 0; |
| } |
| |
| static int dwc3_regdump_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, dwc3_regdump_show, inode->i_private); |
| } |
| |
| static const struct file_operations dwc3_regdump_fops = { |
| .open = dwc3_regdump_open, |
| .read = seq_read, |
| .release = single_release, |
| }; |
| |
| 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 __devinit 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; |
| |
| file = debugfs_create_file("regdump", S_IRUGO, root, dwc, |
| &dwc3_regdump_fops); |
| if (!file) { |
| ret = -ENOMEM; |
| goto err1; |
| } |
| |
| 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; |
| } |
| |
| return 0; |
| |
| err1: |
| debugfs_remove_recursive(root); |
| |
| err0: |
| return ret; |
| } |
| |
| void __devexit dwc3_debugfs_exit(struct dwc3 *dwc) |
| { |
| debugfs_remove_recursive(dwc->root); |
| dwc->root = NULL; |
| } |