Contributors: 16
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Alexander Shishkin |
1095 |
66.81% |
9 |
28.12% |
| Li Jun |
362 |
22.09% |
5 |
15.62% |
| David Lopo |
65 |
3.97% |
1 |
3.12% |
| Michael Grzeschik |
22 |
1.34% |
1 |
3.12% |
| Richard Zhao |
22 |
1.34% |
1 |
3.12% |
| Greg Kroah-Hartman |
17 |
1.04% |
4 |
12.50% |
| Andy Shevchenko |
15 |
0.92% |
1 |
3.12% |
| Heinrich Schuchardt |
12 |
0.73% |
1 |
3.12% |
| Alan One Thousand Gnomes |
10 |
0.61% |
1 |
3.12% |
| Lee Jones |
5 |
0.31% |
1 |
3.12% |
| Geliang Tang |
4 |
0.24% |
1 |
3.12% |
| Dan Carpenter |
2 |
0.12% |
1 |
3.12% |
| Chunfeng Yun |
2 |
0.12% |
1 |
3.12% |
| Wei Yongjun |
2 |
0.12% |
1 |
3.12% |
| Antoine Tenart |
2 |
0.12% |
2 |
6.25% |
| Sebastian Andrzej Siewior |
2 |
0.12% |
1 |
3.12% |
| Total |
1639 |
|
32 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/phy.h>
#include <linux/usb/otg.h>
#include <linux/usb/otg-fsm.h>
#include <linux/usb/chipidea.h>
#include "ci.h"
#include "udc.h"
#include "bits.h"
#include "otg.h"
/*
* ci_device_show: prints information about device capabilities and status
*/
static int ci_device_show(struct seq_file *s, void *data)
{
struct ci_hdrc *ci = s->private;
struct usb_gadget *gadget = &ci->gadget;
seq_printf(s, "speed = %d\n", gadget->speed);
seq_printf(s, "max_speed = %d\n", gadget->max_speed);
seq_printf(s, "is_otg = %d\n", gadget->is_otg);
seq_printf(s, "is_a_peripheral = %d\n", gadget->is_a_peripheral);
seq_printf(s, "b_hnp_enable = %d\n", gadget->b_hnp_enable);
seq_printf(s, "a_hnp_support = %d\n", gadget->a_hnp_support);
seq_printf(s, "a_alt_hnp_support = %d\n", gadget->a_alt_hnp_support);
seq_printf(s, "name = %s\n",
(gadget->name ? gadget->name : ""));
if (!ci->driver)
return 0;
seq_printf(s, "gadget function = %s\n",
(ci->driver->function ? ci->driver->function : ""));
seq_printf(s, "gadget max speed = %d\n", ci->driver->max_speed);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ci_device);
/*
* ci_port_test_show: reads port test mode
*/
static int ci_port_test_show(struct seq_file *s, void *data)
{
struct ci_hdrc *ci = s->private;
unsigned long flags;
unsigned mode;
pm_runtime_get_sync(ci->dev);
spin_lock_irqsave(&ci->lock, flags);
mode = hw_port_test_get(ci);
spin_unlock_irqrestore(&ci->lock, flags);
pm_runtime_put_sync(ci->dev);
seq_printf(s, "mode = %u\n", mode);
return 0;
}
/*
* ci_port_test_write: writes port test mode
*/
static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf,
size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct ci_hdrc *ci = s->private;
unsigned long flags;
unsigned mode;
char buf[32];
int ret;
count = min_t(size_t, sizeof(buf) - 1, count);
if (copy_from_user(buf, ubuf, count))
return -EFAULT;
/* sscanf requires a zero terminated string */
buf[count] = '\0';
if (sscanf(buf, "%u", &mode) != 1)
return -EINVAL;
if (mode > 255)
return -EBADRQC;
pm_runtime_get_sync(ci->dev);
spin_lock_irqsave(&ci->lock, flags);
ret = hw_port_test_set(ci, mode);
spin_unlock_irqrestore(&ci->lock, flags);
pm_runtime_put_sync(ci->dev);
return ret ? ret : count;
}
static int ci_port_test_open(struct inode *inode, struct file *file)
{
return single_open(file, ci_port_test_show, inode->i_private);
}
static const struct file_operations ci_port_test_fops = {
.open = ci_port_test_open,
.write = ci_port_test_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/*
* ci_qheads_show: DMA contents of all queue heads
*/
static int ci_qheads_show(struct seq_file *s, void *data)
{
struct ci_hdrc *ci = s->private;
unsigned long flags;
unsigned i, j;
if (ci->role != CI_ROLE_GADGET) {
seq_printf(s, "not in gadget mode\n");
return 0;
}
spin_lock_irqsave(&ci->lock, flags);
for (i = 0; i < ci->hw_ep_max/2; i++) {
struct ci_hw_ep *hweprx = &ci->ci_hw_ep[i];
struct ci_hw_ep *hweptx =
&ci->ci_hw_ep[i + ci->hw_ep_max/2];
seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n",
i, (u32)hweprx->qh.dma, (u32)hweptx->qh.dma);
for (j = 0; j < (sizeof(struct ci_hw_qh)/sizeof(u32)); j++)
seq_printf(s, " %04X: %08X %08X\n", j,
*((u32 *)hweprx->qh.ptr + j),
*((u32 *)hweptx->qh.ptr + j));
}
spin_unlock_irqrestore(&ci->lock, flags);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ci_qheads);
/*
* ci_requests_show: DMA contents of all requests currently queued (all endpts)
*/
static int ci_requests_show(struct seq_file *s, void *data)
{
struct ci_hdrc *ci = s->private;
unsigned long flags;
struct ci_hw_req *req = NULL;
struct td_node *node, *tmpnode;
unsigned i, j, qsize = sizeof(struct ci_hw_td)/sizeof(u32);
if (ci->role != CI_ROLE_GADGET) {
seq_printf(s, "not in gadget mode\n");
return 0;
}
spin_lock_irqsave(&ci->lock, flags);
for (i = 0; i < ci->hw_ep_max; i++)
list_for_each_entry(req, &ci->ci_hw_ep[i].qh.queue, queue) {
list_for_each_entry_safe(node, tmpnode, &req->tds, td) {
seq_printf(s, "EP=%02i: TD=%08X %s\n",
i % (ci->hw_ep_max / 2),
(u32)node->dma,
((i < ci->hw_ep_max/2) ?
"RX" : "TX"));
for (j = 0; j < qsize; j++)
seq_printf(s, " %04X: %08X\n", j,
*((u32 *)node->ptr + j));
}
}
spin_unlock_irqrestore(&ci->lock, flags);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ci_requests);
static int ci_otg_show(struct seq_file *s, void *unused)
{
struct ci_hdrc *ci = s->private;
struct otg_fsm *fsm;
if (!ci || !ci_otg_is_fsm_mode(ci))
return 0;
fsm = &ci->fsm;
/* ------ State ----- */
seq_printf(s, "OTG state: %s\n\n",
usb_otg_state_string(ci->otg.state));
/* ------ State Machine Variables ----- */
seq_printf(s, "a_bus_drop: %d\n", fsm->a_bus_drop);
seq_printf(s, "a_bus_req: %d\n", fsm->a_bus_req);
seq_printf(s, "a_srp_det: %d\n", fsm->a_srp_det);
seq_printf(s, "a_vbus_vld: %d\n", fsm->a_vbus_vld);
seq_printf(s, "b_conn: %d\n", fsm->b_conn);
seq_printf(s, "adp_change: %d\n", fsm->adp_change);
seq_printf(s, "power_up: %d\n", fsm->power_up);
seq_printf(s, "a_bus_resume: %d\n", fsm->a_bus_resume);
seq_printf(s, "a_bus_suspend: %d\n", fsm->a_bus_suspend);
seq_printf(s, "a_conn: %d\n", fsm->a_conn);
seq_printf(s, "b_bus_req: %d\n", fsm->b_bus_req);
seq_printf(s, "b_bus_suspend: %d\n", fsm->b_bus_suspend);
seq_printf(s, "b_se0_srp: %d\n", fsm->b_se0_srp);
seq_printf(s, "b_ssend_srp: %d\n", fsm->b_ssend_srp);
seq_printf(s, "b_sess_vld: %d\n", fsm->b_sess_vld);
seq_printf(s, "b_srp_done: %d\n", fsm->b_srp_done);
seq_printf(s, "drv_vbus: %d\n", fsm->drv_vbus);
seq_printf(s, "loc_conn: %d\n", fsm->loc_conn);
seq_printf(s, "loc_sof: %d\n", fsm->loc_sof);
seq_printf(s, "adp_prb: %d\n", fsm->adp_prb);
seq_printf(s, "id: %d\n", fsm->id);
seq_printf(s, "protocol: %d\n", fsm->protocol);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ci_otg);
static int ci_registers_show(struct seq_file *s, void *unused)
{
struct ci_hdrc *ci = s->private;
u32 tmp_reg;
if (!ci || ci->in_lpm)
return -EPERM;
/* ------ Registers ----- */
tmp_reg = hw_read_intr_enable(ci);
seq_printf(s, "USBINTR reg: %08x\n", tmp_reg);
tmp_reg = hw_read_intr_status(ci);
seq_printf(s, "USBSTS reg: %08x\n", tmp_reg);
tmp_reg = hw_read(ci, OP_USBMODE, ~0);
seq_printf(s, "USBMODE reg: %08x\n", tmp_reg);
tmp_reg = hw_read(ci, OP_USBCMD, ~0);
seq_printf(s, "USBCMD reg: %08x\n", tmp_reg);
tmp_reg = hw_read(ci, OP_PORTSC, ~0);
seq_printf(s, "PORTSC reg: %08x\n", tmp_reg);
if (ci->is_otg) {
tmp_reg = hw_read_otgsc(ci, ~0);
seq_printf(s, "OTGSC reg: %08x\n", tmp_reg);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ci_registers);
/**
* dbg_create_files: initializes the attribute interface
* @ci: device
*
* This function returns an error code
*/
void dbg_create_files(struct ci_hdrc *ci)
{
struct dentry *dir;
dir = debugfs_create_dir(dev_name(ci->dev), usb_debug_root);
debugfs_create_file("device", S_IRUGO, dir, ci, &ci_device_fops);
debugfs_create_file("port_test", S_IRUGO | S_IWUSR, dir, ci, &ci_port_test_fops);
debugfs_create_file("qheads", S_IRUGO, dir, ci, &ci_qheads_fops);
debugfs_create_file("requests", S_IRUGO, dir, ci, &ci_requests_fops);
if (ci_otg_is_fsm_mode(ci))
debugfs_create_file("otg", S_IRUGO, dir, ci, &ci_otg_fops);
debugfs_create_file("registers", S_IRUGO, dir, ci, &ci_registers_fops);
}
/**
* dbg_remove_files: destroys the attribute interface
* @ci: device
*/
void dbg_remove_files(struct ci_hdrc *ci)
{
debugfs_lookup_and_remove(dev_name(ci->dev), usb_debug_root);
}