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https://github.com/edk2-porting/linux-next.git
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3140e8cbfe
There are two where need to set operational mode: - during initialization while we decide to run in host,device or DRD mode - at runtime via the debugfs interface. This patch provides a new function which sets the operational mode and moves its initialiation to the mode switch instead in the gadget code itself. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
519 lines
14 KiB
C
519 lines
14 KiB
C
/**
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* debugfs.c - DesignWare USB3 DRD Controller DebugFS file
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*
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* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
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*
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* Authors: Felipe Balbi <balbi@ti.com>,
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* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the above-listed copyright holders may not be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2, as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/ptrace.h>
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/delay.h>
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#include <asm/uaccess.h>
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#include "core.h"
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#include "gadget.h"
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#include "io.h"
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struct dwc3_register {
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const char *name;
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u32 offset;
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};
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#define dump_register(nm) \
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{ \
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.name = __stringify(nm), \
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.offset = DWC3_ ##nm, \
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}
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static const struct dwc3_register dwc3_regs[] = {
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dump_register(GSBUSCFG0),
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dump_register(GSBUSCFG1),
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dump_register(GTXTHRCFG),
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dump_register(GRXTHRCFG),
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dump_register(GCTL),
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dump_register(GEVTEN),
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dump_register(GSTS),
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dump_register(GSNPSID),
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dump_register(GGPIO),
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dump_register(GUID),
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dump_register(GUCTL),
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dump_register(GBUSERRADDR0),
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dump_register(GBUSERRADDR1),
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dump_register(GPRTBIMAP0),
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dump_register(GPRTBIMAP1),
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dump_register(GHWPARAMS0),
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dump_register(GHWPARAMS1),
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dump_register(GHWPARAMS2),
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dump_register(GHWPARAMS3),
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dump_register(GHWPARAMS4),
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dump_register(GHWPARAMS5),
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dump_register(GHWPARAMS6),
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dump_register(GHWPARAMS7),
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dump_register(GDBGFIFOSPACE),
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dump_register(GDBGLTSSM),
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dump_register(GPRTBIMAP_HS0),
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dump_register(GPRTBIMAP_HS1),
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dump_register(GPRTBIMAP_FS0),
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dump_register(GPRTBIMAP_FS1),
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dump_register(GUSB2PHYCFG(0)),
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dump_register(GUSB2PHYCFG(1)),
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dump_register(GUSB2PHYCFG(2)),
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dump_register(GUSB2PHYCFG(3)),
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dump_register(GUSB2PHYCFG(4)),
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dump_register(GUSB2PHYCFG(5)),
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dump_register(GUSB2PHYCFG(6)),
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dump_register(GUSB2PHYCFG(7)),
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dump_register(GUSB2PHYCFG(8)),
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dump_register(GUSB2PHYCFG(9)),
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dump_register(GUSB2PHYCFG(10)),
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dump_register(GUSB2PHYCFG(11)),
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dump_register(GUSB2PHYCFG(12)),
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dump_register(GUSB2PHYCFG(13)),
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dump_register(GUSB2PHYCFG(14)),
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dump_register(GUSB2PHYCFG(15)),
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dump_register(GUSB2I2CCTL(0)),
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dump_register(GUSB2I2CCTL(1)),
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dump_register(GUSB2I2CCTL(2)),
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dump_register(GUSB2I2CCTL(3)),
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dump_register(GUSB2I2CCTL(4)),
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dump_register(GUSB2I2CCTL(5)),
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dump_register(GUSB2I2CCTL(6)),
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dump_register(GUSB2I2CCTL(7)),
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dump_register(GUSB2I2CCTL(8)),
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dump_register(GUSB2I2CCTL(9)),
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dump_register(GUSB2I2CCTL(10)),
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dump_register(GUSB2I2CCTL(11)),
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dump_register(GUSB2I2CCTL(12)),
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dump_register(GUSB2I2CCTL(13)),
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dump_register(GUSB2I2CCTL(14)),
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dump_register(GUSB2I2CCTL(15)),
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dump_register(GUSB2PHYACC(0)),
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dump_register(GUSB2PHYACC(1)),
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dump_register(GUSB2PHYACC(2)),
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dump_register(GUSB2PHYACC(3)),
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dump_register(GUSB2PHYACC(4)),
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dump_register(GUSB2PHYACC(5)),
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dump_register(GUSB2PHYACC(6)),
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dump_register(GUSB2PHYACC(7)),
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dump_register(GUSB2PHYACC(8)),
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dump_register(GUSB2PHYACC(9)),
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dump_register(GUSB2PHYACC(10)),
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dump_register(GUSB2PHYACC(11)),
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dump_register(GUSB2PHYACC(12)),
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dump_register(GUSB2PHYACC(13)),
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dump_register(GUSB2PHYACC(14)),
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dump_register(GUSB2PHYACC(15)),
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dump_register(GUSB3PIPECTL(0)),
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dump_register(GUSB3PIPECTL(1)),
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dump_register(GUSB3PIPECTL(2)),
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dump_register(GUSB3PIPECTL(3)),
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dump_register(GUSB3PIPECTL(4)),
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dump_register(GUSB3PIPECTL(5)),
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dump_register(GUSB3PIPECTL(6)),
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dump_register(GUSB3PIPECTL(7)),
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dump_register(GUSB3PIPECTL(8)),
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dump_register(GUSB3PIPECTL(9)),
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dump_register(GUSB3PIPECTL(10)),
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dump_register(GUSB3PIPECTL(11)),
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dump_register(GUSB3PIPECTL(12)),
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dump_register(GUSB3PIPECTL(13)),
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dump_register(GUSB3PIPECTL(14)),
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dump_register(GUSB3PIPECTL(15)),
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dump_register(GTXFIFOSIZ(0)),
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dump_register(GTXFIFOSIZ(1)),
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dump_register(GTXFIFOSIZ(2)),
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dump_register(GTXFIFOSIZ(3)),
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dump_register(GTXFIFOSIZ(4)),
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dump_register(GTXFIFOSIZ(5)),
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dump_register(GTXFIFOSIZ(6)),
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dump_register(GTXFIFOSIZ(7)),
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dump_register(GTXFIFOSIZ(8)),
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dump_register(GTXFIFOSIZ(9)),
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dump_register(GTXFIFOSIZ(10)),
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dump_register(GTXFIFOSIZ(11)),
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dump_register(GTXFIFOSIZ(12)),
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dump_register(GTXFIFOSIZ(13)),
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dump_register(GTXFIFOSIZ(14)),
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dump_register(GTXFIFOSIZ(15)),
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dump_register(GTXFIFOSIZ(16)),
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dump_register(GTXFIFOSIZ(17)),
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dump_register(GTXFIFOSIZ(18)),
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dump_register(GTXFIFOSIZ(19)),
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dump_register(GTXFIFOSIZ(20)),
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dump_register(GTXFIFOSIZ(21)),
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dump_register(GTXFIFOSIZ(22)),
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dump_register(GTXFIFOSIZ(23)),
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dump_register(GTXFIFOSIZ(24)),
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dump_register(GTXFIFOSIZ(25)),
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dump_register(GTXFIFOSIZ(26)),
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dump_register(GTXFIFOSIZ(27)),
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dump_register(GTXFIFOSIZ(28)),
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dump_register(GTXFIFOSIZ(29)),
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dump_register(GTXFIFOSIZ(30)),
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dump_register(GTXFIFOSIZ(31)),
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dump_register(GRXFIFOSIZ(0)),
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dump_register(GRXFIFOSIZ(1)),
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dump_register(GRXFIFOSIZ(2)),
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dump_register(GRXFIFOSIZ(3)),
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dump_register(GRXFIFOSIZ(4)),
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dump_register(GRXFIFOSIZ(5)),
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dump_register(GRXFIFOSIZ(6)),
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dump_register(GRXFIFOSIZ(7)),
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dump_register(GRXFIFOSIZ(8)),
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dump_register(GRXFIFOSIZ(9)),
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dump_register(GRXFIFOSIZ(10)),
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dump_register(GRXFIFOSIZ(11)),
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dump_register(GRXFIFOSIZ(12)),
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dump_register(GRXFIFOSIZ(13)),
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dump_register(GRXFIFOSIZ(14)),
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dump_register(GRXFIFOSIZ(15)),
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dump_register(GRXFIFOSIZ(16)),
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dump_register(GRXFIFOSIZ(17)),
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dump_register(GRXFIFOSIZ(18)),
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dump_register(GRXFIFOSIZ(19)),
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dump_register(GRXFIFOSIZ(20)),
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dump_register(GRXFIFOSIZ(21)),
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dump_register(GRXFIFOSIZ(22)),
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dump_register(GRXFIFOSIZ(23)),
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dump_register(GRXFIFOSIZ(24)),
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dump_register(GRXFIFOSIZ(25)),
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dump_register(GRXFIFOSIZ(26)),
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dump_register(GRXFIFOSIZ(27)),
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dump_register(GRXFIFOSIZ(28)),
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dump_register(GRXFIFOSIZ(29)),
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dump_register(GRXFIFOSIZ(30)),
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dump_register(GRXFIFOSIZ(31)),
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dump_register(GEVNTADRLO(0)),
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dump_register(GEVNTADRHI(0)),
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dump_register(GEVNTSIZ(0)),
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dump_register(GEVNTCOUNT(0)),
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dump_register(GHWPARAMS8),
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dump_register(DCFG),
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dump_register(DCTL),
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dump_register(DEVTEN),
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dump_register(DSTS),
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dump_register(DGCMDPAR),
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dump_register(DGCMD),
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dump_register(DALEPENA),
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dump_register(DEPCMDPAR2(0)),
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dump_register(DEPCMDPAR2(1)),
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dump_register(DEPCMDPAR2(2)),
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dump_register(DEPCMDPAR2(3)),
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dump_register(DEPCMDPAR2(4)),
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dump_register(DEPCMDPAR2(5)),
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dump_register(DEPCMDPAR2(6)),
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dump_register(DEPCMDPAR2(7)),
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dump_register(DEPCMDPAR2(8)),
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dump_register(DEPCMDPAR2(9)),
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dump_register(DEPCMDPAR2(10)),
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dump_register(DEPCMDPAR2(11)),
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dump_register(DEPCMDPAR2(12)),
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dump_register(DEPCMDPAR2(13)),
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dump_register(DEPCMDPAR2(14)),
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dump_register(DEPCMDPAR2(15)),
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dump_register(DEPCMDPAR2(16)),
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dump_register(DEPCMDPAR2(17)),
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dump_register(DEPCMDPAR2(18)),
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dump_register(DEPCMDPAR2(19)),
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dump_register(DEPCMDPAR2(20)),
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dump_register(DEPCMDPAR2(21)),
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dump_register(DEPCMDPAR2(22)),
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dump_register(DEPCMDPAR2(23)),
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dump_register(DEPCMDPAR2(24)),
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dump_register(DEPCMDPAR2(25)),
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dump_register(DEPCMDPAR2(26)),
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dump_register(DEPCMDPAR2(27)),
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dump_register(DEPCMDPAR2(28)),
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dump_register(DEPCMDPAR2(29)),
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dump_register(DEPCMDPAR2(30)),
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dump_register(DEPCMDPAR2(31)),
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dump_register(DEPCMDPAR1(0)),
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dump_register(DEPCMDPAR1(1)),
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dump_register(DEPCMDPAR1(2)),
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dump_register(DEPCMDPAR1(3)),
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dump_register(DEPCMDPAR1(4)),
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dump_register(DEPCMDPAR1(5)),
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dump_register(DEPCMDPAR1(6)),
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dump_register(DEPCMDPAR1(7)),
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dump_register(DEPCMDPAR1(8)),
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dump_register(DEPCMDPAR1(9)),
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dump_register(DEPCMDPAR1(10)),
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dump_register(DEPCMDPAR1(11)),
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dump_register(DEPCMDPAR1(12)),
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dump_register(DEPCMDPAR1(13)),
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dump_register(DEPCMDPAR1(14)),
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dump_register(DEPCMDPAR1(15)),
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dump_register(DEPCMDPAR1(16)),
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dump_register(DEPCMDPAR1(17)),
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dump_register(DEPCMDPAR1(18)),
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dump_register(DEPCMDPAR1(19)),
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dump_register(DEPCMDPAR1(20)),
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dump_register(DEPCMDPAR1(21)),
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dump_register(DEPCMDPAR1(22)),
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dump_register(DEPCMDPAR1(23)),
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dump_register(DEPCMDPAR1(24)),
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dump_register(DEPCMDPAR1(25)),
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dump_register(DEPCMDPAR1(26)),
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dump_register(DEPCMDPAR1(27)),
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dump_register(DEPCMDPAR1(28)),
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dump_register(DEPCMDPAR1(29)),
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dump_register(DEPCMDPAR1(30)),
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dump_register(DEPCMDPAR1(31)),
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dump_register(DEPCMDPAR0(0)),
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dump_register(DEPCMDPAR0(1)),
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dump_register(DEPCMDPAR0(2)),
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dump_register(DEPCMDPAR0(3)),
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dump_register(DEPCMDPAR0(4)),
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dump_register(DEPCMDPAR0(5)),
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dump_register(DEPCMDPAR0(6)),
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dump_register(DEPCMDPAR0(7)),
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dump_register(DEPCMDPAR0(8)),
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dump_register(DEPCMDPAR0(9)),
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dump_register(DEPCMDPAR0(10)),
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dump_register(DEPCMDPAR0(11)),
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dump_register(DEPCMDPAR0(12)),
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dump_register(DEPCMDPAR0(13)),
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dump_register(DEPCMDPAR0(14)),
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dump_register(DEPCMDPAR0(15)),
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dump_register(DEPCMDPAR0(16)),
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dump_register(DEPCMDPAR0(17)),
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dump_register(DEPCMDPAR0(18)),
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dump_register(DEPCMDPAR0(19)),
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dump_register(DEPCMDPAR0(20)),
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dump_register(DEPCMDPAR0(21)),
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dump_register(DEPCMDPAR0(22)),
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dump_register(DEPCMDPAR0(23)),
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dump_register(DEPCMDPAR0(24)),
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dump_register(DEPCMDPAR0(25)),
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dump_register(DEPCMDPAR0(26)),
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dump_register(DEPCMDPAR0(27)),
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dump_register(DEPCMDPAR0(28)),
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dump_register(DEPCMDPAR0(29)),
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dump_register(DEPCMDPAR0(30)),
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dump_register(DEPCMDPAR0(31)),
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dump_register(DEPCMD(0)),
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dump_register(DEPCMD(1)),
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dump_register(DEPCMD(2)),
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dump_register(DEPCMD(3)),
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dump_register(DEPCMD(4)),
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dump_register(DEPCMD(5)),
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dump_register(DEPCMD(6)),
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dump_register(DEPCMD(7)),
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dump_register(DEPCMD(8)),
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dump_register(DEPCMD(9)),
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dump_register(DEPCMD(10)),
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dump_register(DEPCMD(11)),
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dump_register(DEPCMD(12)),
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dump_register(DEPCMD(13)),
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dump_register(DEPCMD(14)),
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dump_register(DEPCMD(15)),
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dump_register(DEPCMD(16)),
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dump_register(DEPCMD(17)),
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dump_register(DEPCMD(18)),
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dump_register(DEPCMD(19)),
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dump_register(DEPCMD(20)),
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dump_register(DEPCMD(21)),
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dump_register(DEPCMD(22)),
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dump_register(DEPCMD(23)),
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dump_register(DEPCMD(24)),
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dump_register(DEPCMD(25)),
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dump_register(DEPCMD(26)),
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dump_register(DEPCMD(27)),
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dump_register(DEPCMD(28)),
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dump_register(DEPCMD(29)),
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dump_register(DEPCMD(30)),
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dump_register(DEPCMD(31)),
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dump_register(OCFG),
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dump_register(OCTL),
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dump_register(OEVTEN),
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dump_register(OSTS),
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};
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static int dwc3_regdump_show(struct seq_file *s, void *unused)
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{
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struct dwc3 *dwc = s->private;
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int i;
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seq_printf(s, "DesignWare USB3 Core Register Dump\n");
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for (i = 0; i < ARRAY_SIZE(dwc3_regs); i++) {
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seq_printf(s, "%-20s : %08x\n", dwc3_regs[i].name,
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dwc3_readl(dwc->regs, dwc3_regs[i].offset));
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}
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return 0;
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}
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static int dwc3_regdump_open(struct inode *inode, struct file *file)
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{
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return single_open(file, dwc3_regdump_show, inode->i_private);
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}
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static const struct file_operations dwc3_regdump_fops = {
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.open = dwc3_regdump_open,
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.read = seq_read,
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.release = single_release,
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};
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static int dwc3_mode_show(struct seq_file *s, void *unused)
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{
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struct dwc3 *dwc = s->private;
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unsigned long flags;
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u32 reg;
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spin_lock_irqsave(&dwc->lock, flags);
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reg = dwc3_readl(dwc->regs, DWC3_GCTL);
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spin_unlock_irqrestore(&dwc->lock, flags);
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switch (DWC3_GCTL_PRTCAP(reg)) {
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case DWC3_GCTL_PRTCAP_HOST:
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seq_printf(s, "host\n");
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break;
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case DWC3_GCTL_PRTCAP_DEVICE:
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seq_printf(s, "device\n");
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break;
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case DWC3_GCTL_PRTCAP_OTG:
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seq_printf(s, "OTG\n");
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break;
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default:
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seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
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}
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return 0;
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}
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static int dwc3_mode_open(struct inode *inode, struct file *file)
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{
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|
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,
|
|
};
|
|
|
|
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 (IS_ERR(root)){
|
|
ret = PTR_ERR(root);
|
|
goto err0;
|
|
}
|
|
|
|
dwc->root = root;
|
|
|
|
file = debugfs_create_file("regdump", S_IRUGO, root, dwc,
|
|
&dwc3_regdump_fops);
|
|
if (IS_ERR(file)) {
|
|
ret = PTR_ERR(file);
|
|
goto err1;
|
|
}
|
|
|
|
file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
|
|
dwc, &dwc3_mode_fops);
|
|
if (IS_ERR(file)) {
|
|
ret = PTR_ERR(file);
|
|
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;
|
|
}
|