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Commit c4a8b639 authored by Li Jun's avatar Li Jun Committed by Greg Kroah-Hartman
Browse files

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



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

Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Acked-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarLi Jun <b47624@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 36304b06

drivers/usb/chipidea/debug.c

+51 −0
Original line number Diff line number Diff line
@@ -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: