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Commit 236dd4d1 authored by Anton Vorontsov's avatar Anton Vorontsov Committed by Greg Kroah-Hartman
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USB: Driver for Freescale QUICC Engine USB Host Controller 



This patch adds support for the FHCI USB controller, as found
in the Freescale MPC836x and MPC832x processors. It can support
Full or Low speed modes.

Quite a lot the hardware is doing by itself (SOF generation, CRC
generation and checking), though scheduling and retransmission is on
software's shoulders.

This controller does not integrate the root hub, so this driver also
fakes one-port hub. External hub is required to support more than
one device.

Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent fc91be2a

drivers/usb/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ obj-$(CONFIG_USB_EHCI_HCD) += host/ 
obj-$(CONFIG_USB_ISP116X_HCD)	+= host/

obj-$(CONFIG_USB_OHCI_HCD)	+= host/

obj-$(CONFIG_USB_UHCI_HCD)	+= host/

obj-$(CONFIG_USB_FHCI_HCD)	+= host/

obj-$(CONFIG_USB_SL811_HCD)	+= host/

obj-$(CONFIG_USB_U132_HCD)	+= host/

obj-$(CONFIG_USB_R8A66597_HCD)	+= host/

drivers/usb/host/Kconfig

+17 −0
Original line number Diff line number Diff line
@@ -239,6 +239,23 @@ config USB_UHCI_HCD 
	  To compile this driver as a module, choose M here: the

	  module will be called uhci-hcd.



config USB_FHCI_HCD

	tristate "Freescale QE USB Host Controller support"

	depends on USB && OF_GPIO && QE_GPIO && QUICC_ENGINE

	select FSL_GTM

	select QE_USB

	help

	  This driver enables support for Freescale QE USB Host Controller

	  (as found on MPC8360 and MPC8323 processors), the driver supports

	  Full and Low Speed USB.



config FHCI_DEBUG

	bool "Freescale QE USB Host Controller debug support"

	depends on USB_FHCI_HCD && DEBUG_FS

	help

	  Say "y" to see some FHCI debug information and statistics

	  throught debugfs.



config USB_U132_HCD

	tristate "Elan U132 Adapter Host Controller"

	depends on USB && USB_FTDI_ELAN

drivers/usb/host/Makefile

+6 −0
Original line number Diff line number Diff line
@@ -7,6 +7,11 @@ ifeq ($(CONFIG_USB_DEBUG),y) 
endif



isp1760-objs := isp1760-hcd.o isp1760-if.o

fhci-objs := fhci-hcd.o fhci-hub.o fhci-q.o fhci-mem.o \

	     fhci-tds.o fhci-sched.o

ifeq ($(CONFIG_FHCI_DEBUG),y)

fhci-objs += fhci-dbg.o

endif



obj-$(CONFIG_USB_WHCI_HCD)	+= whci/
@@ -17,6 +22,7 @@ obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o 
obj-$(CONFIG_USB_ISP116X_HCD)	+= isp116x-hcd.o

obj-$(CONFIG_USB_OHCI_HCD)	+= ohci-hcd.o

obj-$(CONFIG_USB_UHCI_HCD)	+= uhci-hcd.o

obj-$(CONFIG_USB_FHCI_HCD)	+= fhci.o

obj-$(CONFIG_USB_SL811_HCD)	+= sl811-hcd.o

obj-$(CONFIG_USB_SL811_CS)	+= sl811_cs.o

obj-$(CONFIG_USB_U132_HCD)	+= u132-hcd.o

drivers/usb/host/fhci-dbg.c

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+139 −0
Original line number Diff line number Diff line 
/*

 * Freescale QUICC Engine USB Host Controller Driver

 *

 * Copyright (c) Freescale Semicondutor, Inc. 2006.

 *               Shlomi Gridish <gridish@freescale.com>

 *               Jerry Huang <Chang-Ming.Huang@freescale.com>

 * Copyright (c) Logic Product Development, Inc. 2007

 *               Peter Barada <peterb@logicpd.com>

 * Copyright (c) MontaVista Software, Inc. 2008.

 *               Anton Vorontsov <avorontsov@ru.mvista.com>

 *

 * This program is free software; you can redistribute  it and/or modify it

 * under  the terms of  the GNU General  Public License as published by the

 * Free Software Foundation;  either version 2 of the  License, or (at your

 * option) any later version.

 */



#include <linux/kernel.h>

#include <linux/errno.h>

#include <linux/debugfs.h>

#include <linux/seq_file.h>

#include <linux/usb.h>

#include "../core/hcd.h"

#include "fhci.h"



void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)

{

	int i;



	if (usb_er == -1) {

		fhci->usb_irq_stat[12]++;

		return;

	}



	for (i = 0; i < 12; ++i) {

		if (usb_er & (1 << i))

			fhci->usb_irq_stat[i]++;

	}

}



static int fhci_dfs_regs_show(struct seq_file *s, void *v)

{

	struct fhci_hcd *fhci = s->private;

	struct fhci_regs __iomem *regs = fhci->regs;



	seq_printf(s,

		"mode: 0x%x\n" "addr: 0x%x\n"

		"command: 0x%x\n" "ep0: 0x%x\n"

		"event: 0x%x\n" "mask: 0x%x\n"

		"status: 0x%x\n" "SOF timer: %d\n"

		"frame number: %d\n"

		"lines status: 0x%x\n",

		in_8(&regs->usb_mod), in_8(&regs->usb_addr),

		in_8(&regs->usb_comm), in_be16(&regs->usb_ep[0]),

		in_be16(&regs->usb_event), in_be16(&regs->usb_mask),

		in_8(&regs->usb_status), in_be16(&regs->usb_sof_tmr),

		in_be16(&regs->usb_frame_num),

		fhci_ioports_check_bus_state(fhci));



	return 0;

}



static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)

{

	struct fhci_hcd *fhci = s->private;

	int *usb_irq_stat = fhci->usb_irq_stat;



	seq_printf(s,

		"RXB: %d\n" "TXB: %d\n" "BSY: %d\n"

		"SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"

		"TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"

		"RESET: %d\n" "SFT: %d\n" "MSF: %d\n"

		"IDLE_ONLY: %d\n",

		usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],

		usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],

		usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],

		usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],

		usb_irq_stat[12]);



	return 0;

}



static int fhci_dfs_regs_open(struct inode *inode, struct file *file)

{

	return single_open(file, fhci_dfs_regs_show, inode->i_private);

}



static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file)

{

	return single_open(file, fhci_dfs_irq_stat_show, inode->i_private);

}



static const struct file_operations fhci_dfs_regs_fops = {

	.open = fhci_dfs_regs_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



static const struct file_operations fhci_dfs_irq_stat_fops = {

	.open = fhci_dfs_irq_stat_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



void fhci_dfs_create(struct fhci_hcd *fhci)

{

	struct device *dev = fhci_to_hcd(fhci)->self.controller;



	fhci->dfs_root = debugfs_create_dir(dev->bus_id, NULL);

	if (!fhci->dfs_root) {

		WARN_ON(1);

		return;

	}



	fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO,

		fhci->dfs_root, fhci, &fhci_dfs_regs_fops);



	fhci->dfs_irq_stat = debugfs_create_file("irq_stat",

		S_IFREG | S_IRUGO, fhci->dfs_root, fhci,

		&fhci_dfs_irq_stat_fops);



	WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat);

}



void fhci_dfs_destroy(struct fhci_hcd *fhci)

{

	if (!fhci->dfs_root)

		return;



	if (fhci->dfs_irq_stat)

		debugfs_remove(fhci->dfs_irq_stat);



	if (fhci->dfs_regs)

		debugfs_remove(fhci->dfs_regs);



	debugfs_remove(fhci->dfs_root);

}

drivers/usb/host/fhci-hcd.c

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