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linux/drivers/usb/dwc2/debugfs.c
Fabrice Gasnier f5c8a6cb23 usb: dwc2: add otg_rev and otg_caps information for gadget driver 
Currently the dwc2 doesn't fill in the 'otg_caps' of usb_gadget structure.
When registering a gadget device (e.g. via configfs), the
usb_otg_descriptor_init() checks the 'otg_caps' and 'otg_rev'. It defaults
to HNP and SRP bmAttributes if unspecified. There may be a mismatch with
what's being set in dwc2 params structure. This result in the descriptors
to be miss-configured in this case.

So replace 'otg_cap' bit field by 'otg_caps' structure, so hnp, srp and
otg_rev' can be configured directly in the params.
It's then provided to the gadget struct. These parameters can be tuned
for each platform. In case it's not set, it will default to current
behavior.

Also add option to setup these from the device tree by calling
of_usb_update_otg_caps(). This provides support for standard properties
such as "otg-rev", "hnp-disable" and "srp-disable" (see usb-drd.yaml).

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/1634133425-25670-4-git-send-email-fabrice.gasnier@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-25 09:20:26 +02:00

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// SPDX-License-Identifier: GPL-2.0
/*
* debugfs.c - Designware USB2 DRD controller debugfs
*
* Copyright (C) 2015 Intel Corporation
* Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
*/
#include <linux/spinlock.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include "core.h"
#include "debug.h"
#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \
IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
/**
* testmode_write() - change usb test mode state.
* @file: The file to write to.
* @ubuf: The buffer where user wrote.
* @count: The ubuf size.
* @ppos: Unused parameter.
*/
static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t
count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc2_hsotg *hsotg = 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 = USB_TEST_J;
else if (!strncmp(buf, "test_k", 6))
testmode = USB_TEST_K;
else if (!strncmp(buf, "test_se0_nak", 12))
testmode = USB_TEST_SE0_NAK;
else if (!strncmp(buf, "test_packet", 11))
testmode = USB_TEST_PACKET;
else if (!strncmp(buf, "test_force_enable", 17))
testmode = USB_TEST_FORCE_ENABLE;
else
testmode = 0;
spin_lock_irqsave(&hsotg->lock, flags);
dwc2_hsotg_set_test_mode(hsotg, testmode);
spin_unlock_irqrestore(&hsotg->lock, flags);
return count;
}
/**
* testmode_show() - debugfs: show usb test mode state
* @s: The seq file to write to.
* @unused: Unused parameter.
*
* This debugfs entry shows which usb test mode is currently enabled.
*/
static int testmode_show(struct seq_file *s, void *unused)
{
struct dwc2_hsotg *hsotg = s->private;
unsigned long flags;
int dctl;
spin_lock_irqsave(&hsotg->lock, flags);
dctl = dwc2_readl(hsotg, DCTL);
dctl &= DCTL_TSTCTL_MASK;
dctl >>= DCTL_TSTCTL_SHIFT;
spin_unlock_irqrestore(&hsotg->lock, flags);
switch (dctl) {
case 0:
seq_puts(s, "no test\n");
break;
case USB_TEST_J:
seq_puts(s, "test_j\n");
break;
case USB_TEST_K:
seq_puts(s, "test_k\n");
break;
case USB_TEST_SE0_NAK:
seq_puts(s, "test_se0_nak\n");
break;
case USB_TEST_PACKET:
seq_puts(s, "test_packet\n");
break;
case USB_TEST_FORCE_ENABLE:
seq_puts(s, "test_force_enable\n");
break;
default:
seq_printf(s, "UNKNOWN %d\n", dctl);
}
return 0;
}
static int testmode_open(struct inode *inode, struct file *file)
{
return single_open(file, testmode_show, inode->i_private);
}
static const struct file_operations testmode_fops = {
.owner = THIS_MODULE,
.open = testmode_open,
.write = testmode_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/**
* state_show - debugfs: show overall driver and device state.
* @seq: The seq file to write to.
* @v: Unused parameter.
*
* This debugfs entry shows the overall state of the hardware and
* some general information about each of the endpoints available
* to the system.
*/
static int state_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
int idx;
seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n",
dwc2_readl(hsotg, DCFG),
dwc2_readl(hsotg, DCTL),
dwc2_readl(hsotg, DSTS));
seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n",
dwc2_readl(hsotg, DIEPMSK), dwc2_readl(hsotg, DOEPMSK));
seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n",
dwc2_readl(hsotg, GINTMSK),
dwc2_readl(hsotg, GINTSTS));
seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n",
dwc2_readl(hsotg, DAINTMSK),
dwc2_readl(hsotg, DAINT));
seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n",
dwc2_readl(hsotg, GNPTXSTS),
dwc2_readl(hsotg, GRXSTSR));
seq_puts(seq, "\nEndpoint status:\n");
for (idx = 0; idx < hsotg->num_of_eps; idx++) {
u32 in, out;
in = dwc2_readl(hsotg, DIEPCTL(idx));
out = dwc2_readl(hsotg, DOEPCTL(idx));
seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x",
idx, in, out);
in = dwc2_readl(hsotg, DIEPTSIZ(idx));
out = dwc2_readl(hsotg, DOEPTSIZ(idx));
seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x",
in, out);
seq_puts(seq, "\n");
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(state);
/**
* fifo_show - debugfs: show the fifo information
* @seq: The seq_file to write data to.
* @v: Unused parameter.
*
* Show the FIFO information for the overall fifo and all the
* periodic transmission FIFOs.
*/
static int fifo_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
int fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
u32 val;
int idx;
seq_puts(seq, "Non-periodic FIFOs:\n");
seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(hsotg, GRXFSIZ));
val = dwc2_readl(hsotg, GNPTXFSIZ);
seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n",
val >> FIFOSIZE_DEPTH_SHIFT,
val & FIFOSIZE_STARTADDR_MASK);
seq_puts(seq, "\nPeriodic TXFIFOs:\n");
for (idx = 1; idx <= fifo_count; idx++) {
val = dwc2_readl(hsotg, DPTXFSIZN(idx));
seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx,
val >> FIFOSIZE_DEPTH_SHIFT,
val & FIFOSIZE_STARTADDR_MASK);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(fifo);
static const char *decode_direction(int is_in)
{
return is_in ? "in" : "out";
}
/**
* ep_show - debugfs: show the state of an endpoint.
* @seq: The seq_file to write data to.
* @v: Unused parameter.
*
* This debugfs entry shows the state of the given endpoint (one is
* registered for each available).
*/
static int ep_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg_ep *ep = seq->private;
struct dwc2_hsotg *hsotg = ep->parent;
struct dwc2_hsotg_req *req;
int index = ep->index;
int show_limit = 15;
unsigned long flags;
seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n",
ep->index, ep->ep.name, decode_direction(ep->dir_in));
/* first show the register state */
seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n",
dwc2_readl(hsotg, DIEPCTL(index)),
dwc2_readl(hsotg, DOEPCTL(index)));
seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n",
dwc2_readl(hsotg, DIEPDMA(index)),
dwc2_readl(hsotg, DOEPDMA(index)));
seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n",
dwc2_readl(hsotg, DIEPINT(index)),
dwc2_readl(hsotg, DOEPINT(index)));
seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n",
dwc2_readl(hsotg, DIEPTSIZ(index)),
dwc2_readl(hsotg, DOEPTSIZ(index)));
seq_puts(seq, "\n");
seq_printf(seq, "mps %d\n", ep->ep.maxpacket);
seq_printf(seq, "total_data=%ld\n", ep->total_data);
seq_printf(seq, "request list (%p,%p):\n",
ep->queue.next, ep->queue.prev);
spin_lock_irqsave(&hsotg->lock, flags);
list_for_each_entry(req, &ep->queue, queue) {
if (--show_limit < 0) {
seq_puts(seq, "not showing more requests...\n");
break;
}
seq_printf(seq, "%c req %p: %d bytes @%p, ",
req == ep->req ? '*' : ' ',
req, req->req.length, req->req.buf);
seq_printf(seq, "%d done, res %d\n",
req->req.actual, req->req.status);
}
spin_unlock_irqrestore(&hsotg->lock, flags);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ep);
/**
* dwc2_hsotg_create_debug - create debugfs directory and files
* @hsotg: The driver state
*
* Create the debugfs files to allow the user to get information
* about the state of the system. The directory name is created
* with the same name as the device itself, in case we end up
* with multiple blocks in future systems.
*/
static void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg)
{
struct dentry *root;
unsigned int epidx;
root = hsotg->debug_root;
/* create general state file */
debugfs_create_file("state", 0444, root, hsotg, &state_fops);
debugfs_create_file("testmode", 0644, root, hsotg, &testmode_fops);
debugfs_create_file("fifo", 0444, root, hsotg, &fifo_fops);
/* Create one file for each out endpoint */
for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) {
struct dwc2_hsotg_ep *ep;
ep = hsotg->eps_out[epidx];
if (ep)
debugfs_create_file(ep->name, 0444, root, ep, &ep_fops);
}
/* Create one file for each in endpoint. EP0 is handled with out eps */
for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) {
struct dwc2_hsotg_ep *ep;
ep = hsotg->eps_in[epidx];
if (ep)
debugfs_create_file(ep->name, 0444, root, ep, &ep_fops);
}
}
#else
static inline void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) {}
#endif
/* dwc2_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */
#define dump_register(nm) \
{ \
.name = #nm, \
.offset = nm, \
}
static const struct debugfs_reg32 dwc2_regs[] = {
/*
* Accessing registers like this can trigger mode mismatch interrupt.
* However, according to dwc2 databook, the register access, in this
* case, is completed on the processor bus but is ignored by the core
* and does not affect its operation.
*/
dump_register(GOTGCTL),
dump_register(GOTGINT),
dump_register(GAHBCFG),
dump_register(GUSBCFG),
dump_register(GRSTCTL),
dump_register(GINTSTS),
dump_register(GINTMSK),
dump_register(GRXSTSR),
/* Omit GRXSTSP */
dump_register(GRXFSIZ),
dump_register(GNPTXFSIZ),
dump_register(GNPTXSTS),
dump_register(GI2CCTL),
dump_register(GPVNDCTL),
dump_register(GGPIO),
dump_register(GUID),
dump_register(GSNPSID),
dump_register(GHWCFG1),
dump_register(GHWCFG2),
dump_register(GHWCFG3),
dump_register(GHWCFG4),
dump_register(GLPMCFG),
dump_register(GPWRDN),
dump_register(GDFIFOCFG),
dump_register(ADPCTL),
dump_register(HPTXFSIZ),
dump_register(DPTXFSIZN(1)),
dump_register(DPTXFSIZN(2)),
dump_register(DPTXFSIZN(3)),
dump_register(DPTXFSIZN(4)),
dump_register(DPTXFSIZN(5)),
dump_register(DPTXFSIZN(6)),
dump_register(DPTXFSIZN(7)),
dump_register(DPTXFSIZN(8)),
dump_register(DPTXFSIZN(9)),
dump_register(DPTXFSIZN(10)),
dump_register(DPTXFSIZN(11)),
dump_register(DPTXFSIZN(12)),
dump_register(DPTXFSIZN(13)),
dump_register(DPTXFSIZN(14)),
dump_register(DPTXFSIZN(15)),
dump_register(DCFG),
dump_register(DCTL),
dump_register(DSTS),
dump_register(DIEPMSK),
dump_register(DOEPMSK),
dump_register(DAINT),
dump_register(DAINTMSK),
dump_register(DTKNQR1),
dump_register(DTKNQR2),
dump_register(DTKNQR3),
dump_register(DTKNQR4),
dump_register(DVBUSDIS),
dump_register(DVBUSPULSE),
dump_register(DIEPCTL(0)),
dump_register(DIEPCTL(1)),
dump_register(DIEPCTL(2)),
dump_register(DIEPCTL(3)),
dump_register(DIEPCTL(4)),
dump_register(DIEPCTL(5)),
dump_register(DIEPCTL(6)),
dump_register(DIEPCTL(7)),
dump_register(DIEPCTL(8)),
dump_register(DIEPCTL(9)),
dump_register(DIEPCTL(10)),
dump_register(DIEPCTL(11)),
dump_register(DIEPCTL(12)),
dump_register(DIEPCTL(13)),
dump_register(DIEPCTL(14)),
dump_register(DIEPCTL(15)),
dump_register(DOEPCTL(0)),
dump_register(DOEPCTL(1)),
dump_register(DOEPCTL(2)),
dump_register(DOEPCTL(3)),
dump_register(DOEPCTL(4)),
dump_register(DOEPCTL(5)),
dump_register(DOEPCTL(6)),
dump_register(DOEPCTL(7)),
dump_register(DOEPCTL(8)),
dump_register(DOEPCTL(9)),
dump_register(DOEPCTL(10)),
dump_register(DOEPCTL(11)),
dump_register(DOEPCTL(12)),
dump_register(DOEPCTL(13)),
dump_register(DOEPCTL(14)),
dump_register(DOEPCTL(15)),
dump_register(DIEPINT(0)),
dump_register(DIEPINT(1)),
dump_register(DIEPINT(2)),
dump_register(DIEPINT(3)),
dump_register(DIEPINT(4)),
dump_register(DIEPINT(5)),
dump_register(DIEPINT(6)),
dump_register(DIEPINT(7)),
dump_register(DIEPINT(8)),
dump_register(DIEPINT(9)),
dump_register(DIEPINT(10)),
dump_register(DIEPINT(11)),
dump_register(DIEPINT(12)),
dump_register(DIEPINT(13)),
dump_register(DIEPINT(14)),
dump_register(DIEPINT(15)),
dump_register(DOEPINT(0)),
dump_register(DOEPINT(1)),
dump_register(DOEPINT(2)),
dump_register(DOEPINT(3)),
dump_register(DOEPINT(4)),
dump_register(DOEPINT(5)),
dump_register(DOEPINT(6)),
dump_register(DOEPINT(7)),
dump_register(DOEPINT(8)),
dump_register(DOEPINT(9)),
dump_register(DOEPINT(10)),
dump_register(DOEPINT(11)),
dump_register(DOEPINT(12)),
dump_register(DOEPINT(13)),
dump_register(DOEPINT(14)),
dump_register(DOEPINT(15)),
dump_register(DIEPTSIZ(0)),
dump_register(DIEPTSIZ(1)),
dump_register(DIEPTSIZ(2)),
dump_register(DIEPTSIZ(3)),
dump_register(DIEPTSIZ(4)),
dump_register(DIEPTSIZ(5)),
dump_register(DIEPTSIZ(6)),
dump_register(DIEPTSIZ(7)),
dump_register(DIEPTSIZ(8)),
dump_register(DIEPTSIZ(9)),
dump_register(DIEPTSIZ(10)),
dump_register(DIEPTSIZ(11)),
dump_register(DIEPTSIZ(12)),
dump_register(DIEPTSIZ(13)),
dump_register(DIEPTSIZ(14)),
dump_register(DIEPTSIZ(15)),
dump_register(DOEPTSIZ(0)),
dump_register(DOEPTSIZ(1)),
dump_register(DOEPTSIZ(2)),
dump_register(DOEPTSIZ(3)),
dump_register(DOEPTSIZ(4)),
dump_register(DOEPTSIZ(5)),
dump_register(DOEPTSIZ(6)),
dump_register(DOEPTSIZ(7)),
dump_register(DOEPTSIZ(8)),
dump_register(DOEPTSIZ(9)),
dump_register(DOEPTSIZ(10)),
dump_register(DOEPTSIZ(11)),
dump_register(DOEPTSIZ(12)),
dump_register(DOEPTSIZ(13)),
dump_register(DOEPTSIZ(14)),
dump_register(DOEPTSIZ(15)),
dump_register(DIEPDMA(0)),
dump_register(DIEPDMA(1)),
dump_register(DIEPDMA(2)),
dump_register(DIEPDMA(3)),
dump_register(DIEPDMA(4)),
dump_register(DIEPDMA(5)),
dump_register(DIEPDMA(6)),
dump_register(DIEPDMA(7)),
dump_register(DIEPDMA(8)),
dump_register(DIEPDMA(9)),
dump_register(DIEPDMA(10)),
dump_register(DIEPDMA(11)),
dump_register(DIEPDMA(12)),
dump_register(DIEPDMA(13)),
dump_register(DIEPDMA(14)),
dump_register(DIEPDMA(15)),
dump_register(DOEPDMA(0)),
dump_register(DOEPDMA(1)),
dump_register(DOEPDMA(2)),
dump_register(DOEPDMA(3)),
dump_register(DOEPDMA(4)),
dump_register(DOEPDMA(5)),
dump_register(DOEPDMA(6)),
dump_register(DOEPDMA(7)),
dump_register(DOEPDMA(8)),
dump_register(DOEPDMA(9)),
dump_register(DOEPDMA(10)),
dump_register(DOEPDMA(11)),
dump_register(DOEPDMA(12)),
dump_register(DOEPDMA(13)),
dump_register(DOEPDMA(14)),
dump_register(DOEPDMA(15)),
dump_register(DTXFSTS(0)),
dump_register(DTXFSTS(1)),
dump_register(DTXFSTS(2)),
dump_register(DTXFSTS(3)),
dump_register(DTXFSTS(4)),
dump_register(DTXFSTS(5)),
dump_register(DTXFSTS(6)),
dump_register(DTXFSTS(7)),
dump_register(DTXFSTS(8)),
dump_register(DTXFSTS(9)),
dump_register(DTXFSTS(10)),
dump_register(DTXFSTS(11)),
dump_register(DTXFSTS(12)),
dump_register(DTXFSTS(13)),
dump_register(DTXFSTS(14)),
dump_register(DTXFSTS(15)),
dump_register(PCGCTL),
dump_register(HCFG),
dump_register(HFIR),
dump_register(HFNUM),
dump_register(HPTXSTS),
dump_register(HAINT),
dump_register(HAINTMSK),
dump_register(HFLBADDR),
dump_register(HPRT0),
dump_register(HCCHAR(0)),
dump_register(HCCHAR(1)),
dump_register(HCCHAR(2)),
dump_register(HCCHAR(3)),
dump_register(HCCHAR(4)),
dump_register(HCCHAR(5)),
dump_register(HCCHAR(6)),
dump_register(HCCHAR(7)),
dump_register(HCCHAR(8)),
dump_register(HCCHAR(9)),
dump_register(HCCHAR(10)),
dump_register(HCCHAR(11)),
dump_register(HCCHAR(12)),
dump_register(HCCHAR(13)),
dump_register(HCCHAR(14)),
dump_register(HCCHAR(15)),
dump_register(HCSPLT(0)),
dump_register(HCSPLT(1)),
dump_register(HCSPLT(2)),
dump_register(HCSPLT(3)),
dump_register(HCSPLT(4)),
dump_register(HCSPLT(5)),
dump_register(HCSPLT(6)),
dump_register(HCSPLT(7)),
dump_register(HCSPLT(8)),
dump_register(HCSPLT(9)),
dump_register(HCSPLT(10)),
dump_register(HCSPLT(11)),
dump_register(HCSPLT(12)),
dump_register(HCSPLT(13)),
dump_register(HCSPLT(14)),
dump_register(HCSPLT(15)),
dump_register(HCINT(0)),
dump_register(HCINT(1)),
dump_register(HCINT(2)),
dump_register(HCINT(3)),
dump_register(HCINT(4)),
dump_register(HCINT(5)),
dump_register(HCINT(6)),
dump_register(HCINT(7)),
dump_register(HCINT(8)),
dump_register(HCINT(9)),
dump_register(HCINT(10)),
dump_register(HCINT(11)),
dump_register(HCINT(12)),
dump_register(HCINT(13)),
dump_register(HCINT(14)),
dump_register(HCINT(15)),
dump_register(HCINTMSK(0)),
dump_register(HCINTMSK(1)),
dump_register(HCINTMSK(2)),
dump_register(HCINTMSK(3)),
dump_register(HCINTMSK(4)),
dump_register(HCINTMSK(5)),
dump_register(HCINTMSK(6)),
dump_register(HCINTMSK(7)),
dump_register(HCINTMSK(8)),
dump_register(HCINTMSK(9)),
dump_register(HCINTMSK(10)),
dump_register(HCINTMSK(11)),
dump_register(HCINTMSK(12)),
dump_register(HCINTMSK(13)),
dump_register(HCINTMSK(14)),
dump_register(HCINTMSK(15)),
dump_register(HCTSIZ(0)),
dump_register(HCTSIZ(1)),
dump_register(HCTSIZ(2)),
dump_register(HCTSIZ(3)),
dump_register(HCTSIZ(4)),
dump_register(HCTSIZ(5)),
dump_register(HCTSIZ(6)),
dump_register(HCTSIZ(7)),
dump_register(HCTSIZ(8)),
dump_register(HCTSIZ(9)),
dump_register(HCTSIZ(10)),
dump_register(HCTSIZ(11)),
dump_register(HCTSIZ(12)),
dump_register(HCTSIZ(13)),
dump_register(HCTSIZ(14)),
dump_register(HCTSIZ(15)),
dump_register(HCDMA(0)),
dump_register(HCDMA(1)),
dump_register(HCDMA(2)),
dump_register(HCDMA(3)),
dump_register(HCDMA(4)),
dump_register(HCDMA(5)),
dump_register(HCDMA(6)),
dump_register(HCDMA(7)),
dump_register(HCDMA(8)),
dump_register(HCDMA(9)),
dump_register(HCDMA(10)),
dump_register(HCDMA(11)),
dump_register(HCDMA(12)),
dump_register(HCDMA(13)),
dump_register(HCDMA(14)),
dump_register(HCDMA(15)),
dump_register(HCDMAB(0)),
dump_register(HCDMAB(1)),
dump_register(HCDMAB(2)),
dump_register(HCDMAB(3)),
dump_register(HCDMAB(4)),
dump_register(HCDMAB(5)),
dump_register(HCDMAB(6)),
dump_register(HCDMAB(7)),
dump_register(HCDMAB(8)),
dump_register(HCDMAB(9)),
dump_register(HCDMAB(10)),
dump_register(HCDMAB(11)),
dump_register(HCDMAB(12)),
dump_register(HCDMAB(13)),
dump_register(HCDMAB(14)),
dump_register(HCDMAB(15)),
};
#define print_param(_seq, _ptr, _param) \
seq_printf((_seq), "%-30s: %d\n", #_param, (_ptr)->_param)
#define print_param_hex(_seq, _ptr, _param) \
seq_printf((_seq), "%-30s: 0x%x\n", #_param, (_ptr)->_param)
static int params_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
struct dwc2_core_params *p = &hsotg->params;
int i;
print_param(seq, p, otg_caps.hnp_support);
print_param(seq, p, otg_caps.srp_support);
print_param(seq, p, otg_caps.otg_rev);
print_param(seq, p, dma_desc_enable);
print_param(seq, p, dma_desc_fs_enable);
print_param(seq, p, speed);
print_param(seq, p, enable_dynamic_fifo);
print_param(seq, p, en_multiple_tx_fifo);
print_param(seq, p, host_rx_fifo_size);
print_param(seq, p, host_nperio_tx_fifo_size);
print_param(seq, p, host_perio_tx_fifo_size);
print_param(seq, p, max_transfer_size);
print_param(seq, p, max_packet_count);
print_param(seq, p, host_channels);
print_param(seq, p, phy_type);
print_param(seq, p, phy_utmi_width);
print_param(seq, p, phy_ulpi_ddr);
print_param(seq, p, phy_ulpi_ext_vbus);
print_param(seq, p, i2c_enable);
print_param(seq, p, ipg_isoc_en);
print_param(seq, p, ulpi_fs_ls);
print_param(seq, p, host_support_fs_ls_low_power);
print_param(seq, p, host_ls_low_power_phy_clk);
print_param(seq, p, activate_stm_fs_transceiver);
print_param(seq, p, activate_stm_id_vb_detection);
print_param(seq, p, ts_dline);
print_param(seq, p, reload_ctl);
print_param_hex(seq, p, ahbcfg);
print_param(seq, p, uframe_sched);
print_param(seq, p, external_id_pin_ctl);
print_param(seq, p, power_down);
print_param(seq, p, lpm);
print_param(seq, p, lpm_clock_gating);
print_param(seq, p, besl);
print_param(seq, p, hird_threshold_en);
print_param(seq, p, hird_threshold);
print_param(seq, p, service_interval);
print_param(seq, p, host_dma);
print_param(seq, p, g_dma);
print_param(seq, p, g_dma_desc);
print_param(seq, p, g_rx_fifo_size);
print_param(seq, p, g_np_tx_fifo_size);
for (i = 0; i < MAX_EPS_CHANNELS; i++) {
char str[32];
snprintf(str, 32, "g_tx_fifo_size[%d]", i);
seq_printf(seq, "%-30s: %d\n", str, p->g_tx_fifo_size[i]);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(params);
static int hw_params_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
struct dwc2_hw_params *hw = &hsotg->hw_params;
print_param(seq, hw, op_mode);
print_param(seq, hw, arch);
print_param(seq, hw, dma_desc_enable);
print_param(seq, hw, enable_dynamic_fifo);
print_param(seq, hw, en_multiple_tx_fifo);
print_param(seq, hw, rx_fifo_size);
print_param(seq, hw, host_nperio_tx_fifo_size);
print_param(seq, hw, dev_nperio_tx_fifo_size);
print_param(seq, hw, host_perio_tx_fifo_size);
print_param(seq, hw, nperio_tx_q_depth);
print_param(seq, hw, host_perio_tx_q_depth);
print_param(seq, hw, dev_token_q_depth);
print_param(seq, hw, max_transfer_size);
print_param(seq, hw, max_packet_count);
print_param(seq, hw, host_channels);
print_param(seq, hw, hs_phy_type);
print_param(seq, hw, fs_phy_type);
print_param(seq, hw, i2c_enable);
print_param(seq, hw, num_dev_ep);
print_param(seq, hw, num_dev_perio_in_ep);
print_param(seq, hw, total_fifo_size);
print_param(seq, hw, power_optimized);
print_param(seq, hw, utmi_phy_data_width);
print_param_hex(seq, hw, snpsid);
print_param_hex(seq, hw, dev_ep_dirs);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(hw_params);
static int dr_mode_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
const char *dr_mode = "";
device_property_read_string(hsotg->dev, "dr_mode", &dr_mode);
seq_printf(seq, "%s\n", dr_mode);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(dr_mode);
int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
{
int ret;
struct dentry *root;
root = debugfs_create_dir(dev_name(hsotg->dev), usb_debug_root);
hsotg->debug_root = root;
debugfs_create_file("params", 0444, root, hsotg, &params_fops);
debugfs_create_file("hw_params", 0444, root, hsotg, &hw_params_fops);
debugfs_create_file("dr_mode", 0444, root, hsotg, &dr_mode_fops);
/* Add gadget debugfs nodes */
dwc2_hsotg_create_debug(hsotg);
hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset),
GFP_KERNEL);
if (!hsotg->regset) {
ret = -ENOMEM;
goto err;
}
hsotg->regset->regs = dwc2_regs;
hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs);
hsotg->regset->base = hsotg->regs;
debugfs_create_regset32("regdump", 0444, root, hsotg->regset);
return 0;
err:
debugfs_remove_recursive(hsotg->debug_root);
return ret;
}
void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg)
{
debugfs_remove_recursive(hsotg->debug_root);
hsotg->debug_root = NULL;
}
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