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usb: chipidea: debug: add debug file for controller registers dump

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This patch adds below registers dump for debug:
- USBINTR
- USBSTS
- USBMODE
- USBCMD
- PORTSC
- OTGSC

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Li Jun <b47624@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Li Jun 2014-04-23 15:56:40 +08:00 committed by Greg Kroah-Hartman
parent 36304b0616
commit c4a8b6392a
1 changed files with 51 additions and 0 deletions
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51
drivers/usb/chipidea/debug.c
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@ -12,6 +12,7 @@
#include "udc.h"
#include "bits.h"
#include "debug.h"
#include "otg.h"
/**
* ci_device_show: prints information about device capabilities and status
@ -253,6 +254,50 @@ static const struct file_operations ci_role_fops = {
.release = single_release,
};
int ci_registers_show(struct seq_file *s, void *unused)
{
struct ci_hdrc *ci = s->private;
u32 tmp_reg;
if (!ci)
return 0;
/* ------ 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;
}
static int ci_registers_open(struct inode *inode, struct file *file)
{
return single_open(file, ci_registers_show, inode->i_private);
}
static const struct file_operations ci_registers_fops = {
.open = ci_registers_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/**
* dbg_create_files: initializes the attribute interface
* @ci: device
@ -289,6 +334,12 @@ int dbg_create_files(struct ci_hdrc *ci)
dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci,
&ci_role_fops);
if (!dent)
goto err;
dent = debugfs_create_file("registers", S_IRUGO, ci->debugfs, ci,
&ci_registers_fops);
if (dent)
return 0;
err: