can: Revert outdated cc770 driver patches.

Newer versions have been floating about, and I applied
to older variant unfortunately.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/can/Kconfig

@@ -116,8 +116,6 @@ source "drivers/net/can/sja1000/Kconfig"
 
 source "drivers/net/can/c_can/Kconfig"
 
-source "drivers/net/can/cc770/Kconfig"
-
 source "drivers/net/can/usb/Kconfig"
 
 source "drivers/net/can/softing/Kconfig"

drivers/net/can/Makefile

@@ -14,7 +14,6 @@ obj-y				+= softing/
 obj-$(CONFIG_CAN_SJA1000)	+= sja1000/
 obj-$(CONFIG_CAN_MSCAN)		+= mscan/
 obj-$(CONFIG_CAN_C_CAN)		+= c_can/
-obj-$(CONFIG_CAN_CC770)		+= cc770/
 obj-$(CONFIG_CAN_AT91)		+= at91_can.o
 obj-$(CONFIG_CAN_TI_HECC)	+= ti_hecc.o
 obj-$(CONFIG_CAN_MCP251X)	+= mcp251x.o

drivers/net/can/cc770/Kconfig

@@ -1,14 +0,0 @@
-menuconfig CAN_CC770
-	tristate "Bosch CC770 and Intel AN82527 devices"
-	depends on CAN_DEV && HAS_IOMEM
-
-if CAN_CC770
-
-config CAN_CC770_ISA
-	tristate "ISA Bus based legacy CC770 driver"
-	---help---
-	  This driver adds legacy support for CC770 and AN82527 chips
-	  connected to the ISA bus using I/O port, memory mapped or
-	  indirect access.
-
-endif

drivers/net/can/cc770/Makefile

@@ -1,8 +0,0 @@
-#
-#  Makefile for the Bosch CC770 CAN controller drivers.
-#
-
-obj-$(CONFIG_CAN_CC770) += cc770.o
-obj-$(CONFIG_CAN_CC770_ISA) += cc770_isa.o
-
-ccflags-$(CONFIG_CAN_DEBUG_DEVICES) := -DDEBUG

drivers/net/can/cc770/cc770.c

@@ -1,895 +0,0 @@
-/*
- * cc770.c - Bosch CC770 and Intel AN82527 network device driver
- *
- * Copyright (C) 2009, 2011 Wolfgang Grandegger <wg@grandegger.com>
- *
- * Derived from the old Socket-CAN i82527 driver:
- *
- * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Volkswagen nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Alternatively, provided that this notice is retained in full, this
- * software may be distributed under the terms of the GNU General
- * Public License ("GPL") version 2, in which case the provisions of the
- * GPL apply INSTEAD OF those given above.
- *
- * The provided data structures and external interfaces from this code
- * are not restricted to be used by modules with a GPL compatible license.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * Send feedback to <socketcan-users@lists.berlios.de>
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/version.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ptrace.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/if_ether.h>
-#include <linux/skbuff.h>
-#include <linux/delay.h>
-
-#include <linux/can.h>
-#include <linux/can/dev.h>
-#include <linux/can/error.h>
-#include <linux/can/dev.h>
-
-#include "cc770.h"
-
-#define DRV_NAME  "cc770"
-
-MODULE_AUTHOR("Wolfgang Grandegger <wg@grandegger.com>");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION(DRV_NAME "CAN netdevice driver");
-
-/*
- * The CC770 is a CAN controller from Bosch, which is 100% compatible
- * with the AN82527 from Intel, but with "bugs" being fixed and some
- * additional functionality, mainly:
- *
- * 1. RX and TX error counters are readable.
- * 2. Support of silent (listen-only) mode.
- * 3. Message object 15 can receive all types of frames, also RTR and EFF.
- *
- * Details are available from Bosch's "CC770_Product_Info_2007-01.pdf",
- * which explains in detail the compatibility between the CC770 and the
- * 82527. This driver use the additional functionality 3. on real CC770
- * devices. Unfortunately, the CC770 does still not store the message
- * identifier of received remote transmission request frames and
- * therefore it's set to 0.
- *
- * The message objects 1..14 can be used for TX and RX while the message
- * objects 15 is optimized for RX. It has a shadow register for reliable
- * data receiption under heavy bus load. Therefore it makes sense to use
- * this message object for the needed use case. The frame type (EFF/SFF)
- * for the message object 15 can be defined via kernel module parameter
- * "msgobj15_eff". If not equal 0, it will receive 29-bit EFF frames,
- * otherwise 11 bit SFF messages.
- */
-static int msgobj15_eff;
-module_param(msgobj15_eff, int, S_IRUGO);
-MODULE_PARM_DESC(msgobj15_eff, "Extended 29-bit frames for message object 15 "
-		 "(default: 11-bit standard frames)");
-
-static int i82527_compat;
-module_param(i82527_compat, int, S_IRUGO);
-MODULE_PARM_DESC(i82527_compat, "Strict Intel 82527 comptibility mode "
-		 "without using additional functions");
-
-/*
- * This driver uses the last 5 message objects 11..15. The definitions
- * and structure below allows to configure and assign them to the real
- * message object.
- */
-static unsigned char cc770_obj_flags[CC770_OBJ_MAX] = {
-	[CC770_OBJ_RX0] = CC770_OBJ_FLAG_RX,
-	[CC770_OBJ_RX1] = CC770_OBJ_FLAG_RX | CC770_OBJ_FLAG_EFF,
-	[CC770_OBJ_RX_RTR0] = CC770_OBJ_FLAG_RX | CC770_OBJ_FLAG_RTR,
-	[CC770_OBJ_RX_RTR1] = CC770_OBJ_FLAG_RX | CC770_OBJ_FLAG_RTR |
-			      CC770_OBJ_FLAG_EFF,
-	[CC770_OBJ_TX] = 0,
-};
-
-static struct can_bittiming_const cc770_bittiming_const = {
-	.name = DRV_NAME,
-	.tseg1_min = 1,
-	.tseg1_max = 16,
-	.tseg2_min = 1,
-	.tseg2_max = 8,
-	.sjw_max = 4,
-	.brp_min = 1,
-	.brp_max = 64,
-	.brp_inc = 1,
-};
-
-static inline int intid2obj(unsigned int intid)
-{
-	if (intid == 2)
-		return 0;
-	else
-		return MSGOBJ_LAST + 2 - intid;
-}
-
-static void enable_all_objs(const struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	u8 msgcfg;
-	unsigned char obj_flags;
-	unsigned int o, mo;
-
-	for (o = 0; o <  CC770_OBJ_MAX; o++) {
-		obj_flags = priv->obj_flags[o];
-		mo = obj2msgobj(o);
-
-		if (obj_flags & CC770_OBJ_FLAG_RX) {
-			/*
-			 * We don't need extra objects for RTR and EFF if
-			 * the additional CC770 functions are enabled.
-			 */
-			if (priv->control_normal_mode & CTRL_EAF) {
-				if (o > 0)
-					continue;
-				netdev_dbg(dev, "Message object %d for "
-					   "RX data, RTR, SFF and EFF\n", mo);
-			} else {
-				netdev_dbg(dev,
-					   "Message object %d for RX %s %s\n",
-					   mo, obj_flags & CC770_OBJ_FLAG_RTR ?
-					   "RTR" : "data",
-					   obj_flags & CC770_OBJ_FLAG_EFF ?
-					   "EFF" : "SFF");
-			}
-
-			if (obj_flags & CC770_OBJ_FLAG_EFF)
-				msgcfg = MSGCFG_XTD;
-			else
-				msgcfg = 0;
-			if (obj_flags & CC770_OBJ_FLAG_RTR)
-				msgcfg |= MSGCFG_DIR;
-
-			cc770_write_reg(priv, msgobj[mo].config, msgcfg);
-			cc770_write_reg(priv, msgobj[mo].ctrl0,
-					MSGVAL_SET | TXIE_RES |
-					RXIE_SET | INTPND_RES);
-
-			if (obj_flags & CC770_OBJ_FLAG_RTR)
-				cc770_write_reg(priv, msgobj[mo].ctrl1,
-						NEWDAT_RES | CPUUPD_SET |
-						TXRQST_RES | RMTPND_RES);
-			else
-				cc770_write_reg(priv, msgobj[mo].ctrl1,
-						NEWDAT_RES | MSGLST_RES |
-						TXRQST_RES | RMTPND_RES);
-		} else {
-			netdev_dbg(dev, "Message object %d for "
-				   "TX data, RTR, SFF and EFF\n", mo);
-
-			cc770_write_reg(priv, msgobj[mo].ctrl1,
-					RMTPND_RES | TXRQST_RES |
-					CPUUPD_RES | NEWDAT_RES);
-			cc770_write_reg(priv, msgobj[mo].ctrl0,
-					MSGVAL_RES | TXIE_RES |
-					RXIE_RES | INTPND_RES);
-		}
-	}
-}
-
-static void disable_all_objs(const struct cc770_priv *priv)
-{
-	int i, mo;
-
-	for (i = 0; i <  CC770_OBJ_MAX; i++) {
-		mo = obj2msgobj(i);
-
-		if (priv->obj_flags[i] & CC770_OBJ_FLAG_RX) {
-			if (i > 0 && priv->control_normal_mode & CTRL_EAF)
-				continue;
-
-			cc770_write_reg(priv, msgobj[mo].ctrl1,
-					NEWDAT_RES | MSGLST_RES |
-					TXRQST_RES | RMTPND_RES);
-			cc770_write_reg(priv, msgobj[mo].ctrl0,
-					MSGVAL_RES | TXIE_RES |
-					RXIE_RES | INTPND_RES);
-		} else {
-			/* Clear message object for send */
-			cc770_write_reg(priv, msgobj[mo].ctrl1,
-					RMTPND_RES | TXRQST_RES |
-					CPUUPD_RES | NEWDAT_RES);
-			cc770_write_reg(priv, msgobj[mo].ctrl0,
-					MSGVAL_RES | TXIE_RES |
-					RXIE_RES | INTPND_RES);
-		}
-	}
-}
-
-static void set_reset_mode(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-
-	/* Enable configuration and puts chip in bus-off, disable interrupts */
-	cc770_write_reg(priv, control, CTRL_CCE | CTRL_INI);
-
-	priv->can.state = CAN_STATE_STOPPED;
-
-	/* Clear interrupts */
-	cc770_read_reg(priv, interrupt);
-
-	/* Clear status register */
-	cc770_write_reg(priv, status, 0);
-
-	/* Disable all used message objects */
-	disable_all_objs(priv);
-}
-
-static void set_normal_mode(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-
-	/* Clear interrupts */
-	cc770_read_reg(priv, interrupt);
-
-	/* Clear status register and pre-set last error code */
-	cc770_write_reg(priv, status, STAT_LEC_MASK);
-
-	/* Enable all used message objects*/
-	enable_all_objs(dev);
-
-	/*
-	 * Clear bus-off, interrupts only for errors,
-	 * not for status change
-	 */
-	cc770_write_reg(priv, control, priv->control_normal_mode);
-
-	priv->can.state = CAN_STATE_ERROR_ACTIVE;
-}
-
-static void chipset_init(struct cc770_priv *priv)
-{
-	int mo, id, data;
-
-	/* Enable configuration and put chip in bus-off, disable interrupts */
-	cc770_write_reg(priv, control, (CTRL_CCE | CTRL_INI));
-
-	/* Set CLKOUT divider and slew rates */
-	cc770_write_reg(priv, clkout, priv->clkout);
-
-	/* Configure CPU interface / CLKOUT enable */
-	cc770_write_reg(priv, cpu_interface, priv->cpu_interface | CPUIF_CEN);
-
-	/* Set bus configuration  */
-	cc770_write_reg(priv, bus_config, priv->bus_config);
-
-	/* Clear interrupts */
-	cc770_read_reg(priv, interrupt);
-
-	/* Clear status register */
-	cc770_write_reg(priv, status, 0);
-
-	/* Clear and invalidate message objects */
-	for (mo = MSGOBJ_FIRST; mo <= MSGOBJ_LAST; mo++) {
-		cc770_write_reg(priv, msgobj[mo].ctrl0,
-				INTPND_UNC | RXIE_RES |
-				TXIE_RES | MSGVAL_RES);
-		cc770_write_reg(priv, msgobj[mo].ctrl0,
-				INTPND_RES | RXIE_RES |
-				TXIE_RES | MSGVAL_RES);
-		cc770_write_reg(priv, msgobj[mo].ctrl1,
-				NEWDAT_RES | MSGLST_RES |
-				TXRQST_RES | RMTPND_RES);
-		for (data = 0; data < 8; data++)
-			cc770_write_reg(priv, msgobj[mo].data[data], 0);
-		for (id = 0; id < 4; id++)
-			cc770_write_reg(priv, msgobj[mo].id[id], 0);
-		cc770_write_reg(priv, msgobj[mo].config, 0);
-	}
-
-	/* Set all global ID masks to "don't care" */
-	cc770_write_reg(priv, global_mask_std[0], 0);
-	cc770_write_reg(priv, global_mask_std[1], 0);
-	cc770_write_reg(priv, global_mask_ext[0], 0);
-	cc770_write_reg(priv, global_mask_ext[1], 0);
-	cc770_write_reg(priv, global_mask_ext[2], 0);
-	cc770_write_reg(priv, global_mask_ext[3], 0);
-
-}
-
-static int cc770_probe_chip(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-
-	/* Enable configuration, put chip in bus-off, disable ints */
-	cc770_write_reg(priv, control, CTRL_CCE | CTRL_EAF | CTRL_INI);
-	/* Configure cpu interface / CLKOUT disable */
-	cc770_write_reg(priv, cpu_interface, priv->cpu_interface);
-
-	/*
-	 * Check if hardware reset is still inactive or maybe there
-	 * is no chip in this address space
-	 */
-	if (cc770_read_reg(priv, cpu_interface) & CPUIF_RST) {
-		netdev_info(dev, "probing @0x%p failed (reset)\n",
-			    priv->reg_base);
-		return 0;
-	}
-
-	/* Write and read back test pattern */
-	cc770_write_reg(priv, msgobj[1].data[1], 0x25);
-	cc770_write_reg(priv, msgobj[2].data[3], 0x52);
-	cc770_write_reg(priv, msgobj[10].data[6], 0xc3);
-	if ((cc770_read_reg(priv, msgobj[1].data[1]) != 0x25) ||
-	    (cc770_read_reg(priv, msgobj[2].data[3]) != 0x52) ||
-	    (cc770_read_reg(priv, msgobj[10].data[6]) != 0xc3)) {
-		netdev_info(dev, "probing @0x%p failed (pattern)\n",
-			    priv->reg_base);
-		return 0;
-	}
-
-	/* Check if this chip is a CC770 supporting additional functions */
-	if (cc770_read_reg(priv, control) & CTRL_EAF)
-		priv->control_normal_mode |= CTRL_EAF;
-
-	return 1;
-}
-
-static void cc770_start(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-
-	/* leave reset mode */
-	if (priv->can.state != CAN_STATE_STOPPED)
-		set_reset_mode(dev);
-
-	/* leave reset mode */
-	set_normal_mode(dev);
-}
-
-static int cc770_set_mode(struct net_device *dev, enum can_mode mode)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-
-	if (!priv->open_time)
-		return -EINVAL;
-
-	switch (mode) {
-	case CAN_MODE_START:
-		cc770_start(dev);
-		if (netif_queue_stopped(dev))
-			netif_wake_queue(dev);
-		break;
-
-	default:
-		return -EOPNOTSUPP;
-	}
-
-	return 0;
-}
-
-static int cc770_set_bittiming(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	struct can_bittiming *bt = &priv->can.bittiming;
-	u8 btr0, btr1;
-
-	btr0 = ((bt->brp - 1) & 0x3f) | (((bt->sjw - 1) & 0x3) << 6);
-	btr1 = ((bt->prop_seg + bt->phase_seg1 - 1) & 0xf) |
-		(((bt->phase_seg2 - 1) & 0x7) << 4);
-	if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
-		btr1 |= 0x80;
-
-	netdev_info(dev, "setting BTR0=0x%02x BTR1=0x%02x\n", btr0, btr1);
-
-	cc770_write_reg(priv, bit_timing_0, btr0);
-	cc770_write_reg(priv, bit_timing_1, btr1);
-
-	return 0;
-}
-
-static netdev_tx_t cc770_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	struct net_device_stats *stats = &dev->stats;
-	struct can_frame *cf = (struct can_frame *)skb->data;
-	unsigned int mo = obj2msgobj(CC770_OBJ_TX);
-	u8 dlc, rtr;
-	u32 id;
-	int i;
-
-	if (can_dropped_invalid_skb(dev, skb))
-		return NETDEV_TX_OK;
-
-	if ((cc770_read_reg(priv,
-			    msgobj[mo].ctrl1) & TXRQST_UNC) == TXRQST_SET) {
-		netdev_err(dev, "TX register is still occupied!\n");
-		return NETDEV_TX_BUSY;
-	}
-
-	netif_stop_queue(dev);
-
-	dlc = cf->can_dlc;
-	id = cf->can_id;
-	if (cf->can_id & CAN_RTR_FLAG)
-		rtr = 0;
-	else
-		rtr = MSGCFG_DIR;
-	cc770_write_reg(priv, msgobj[mo].ctrl1,
-			RMTPND_RES | TXRQST_RES | CPUUPD_SET | NEWDAT_RES);
-	cc770_write_reg(priv, msgobj[mo].ctrl0,
-			MSGVAL_SET | TXIE_SET | RXIE_RES | INTPND_RES);
-	if (id & CAN_EFF_FLAG) {
-		id &= CAN_EFF_MASK;
-		cc770_write_reg(priv, msgobj[mo].config,
-				(dlc << 4) + rtr + MSGCFG_XTD);
-		cc770_write_reg(priv, msgobj[mo].id[3],
-				(id << 3) & 0xFFU);
-		cc770_write_reg(priv, msgobj[mo].id[2],
-				(id >> 5) & 0xFFU);
-		cc770_write_reg(priv, msgobj[mo].id[1],
-				(id >> 13) & 0xFFU);
-		cc770_write_reg(priv, msgobj[mo].id[0],
-				(id >> 21) & 0xFFU);
-	} else {
-		id &= CAN_SFF_MASK;
-		cc770_write_reg(priv, msgobj[mo].config,
-				(dlc << 4) + rtr);
-		cc770_write_reg(priv, msgobj[mo].id[0],
-				(id >> 3) & 0xFFU);
-		cc770_write_reg(priv, msgobj[mo].id[1],
-				(id << 5) & 0xFFU);
-	}
-
-	dlc &= 0x0f;		/* restore length only */
-	for (i = 0; i < dlc; i++)
-		cc770_write_reg(priv, msgobj[mo].data[i], cf->data[i]);
-
-	cc770_write_reg(priv, msgobj[mo].ctrl1,
-			RMTPND_RES | TXRQST_SET | CPUUPD_RES | NEWDAT_UNC);
-
-	stats->tx_bytes += dlc;
-
-	can_put_echo_skb(skb, dev, 0);
-
-	/*
-	 * HM: We had some cases of repeated IRQs so make sure the
-	 * INT is acknowledged I know it's already further up, but
-	 * doing again fixed the issue
-	 */
-	cc770_write_reg(priv, msgobj[mo].ctrl0,
-			MSGVAL_UNC | TXIE_UNC | RXIE_UNC | INTPND_RES);
-
-	return NETDEV_TX_OK;
-}
-
-static void cc770_rx(struct net_device *dev, unsigned int mo, u8 ctrl1)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	struct net_device_stats *stats = &dev->stats;
-	struct can_frame *cf;
-	struct sk_buff *skb;
-	u8 config;
-	u32 id;
-	int i;
-
-	skb = alloc_can_skb(dev, &cf);
-	if (skb == NULL)
-		return;
-
-	config = cc770_read_reg(priv, msgobj[mo].config);
-
-	if (ctrl1 & RMTPND_SET) {
-		/*
-		 * Unfortunately, the chip does not store the real message
-		 * identifier of the received remote transmission request
-		 * frame. Therefore we set it to 0.
-		 */
-		cf->can_id = CAN_RTR_FLAG;
-		if (config & MSGCFG_XTD)
-			cf->can_id |= CAN_EFF_FLAG;
-		cf->can_dlc = 0;
-	} else {
-		if (config & MSGCFG_XTD) {
-			id = cc770_read_reg(priv, msgobj[mo].id[3]);
-			id |= cc770_read_reg(priv, msgobj[mo].id[2]) << 8;
-			id |= cc770_read_reg(priv, msgobj[mo].id[1]) << 16;
-			id |= cc770_read_reg(priv, msgobj[mo].id[0]) << 24;
-			id >>= 3;
-			id |= CAN_EFF_FLAG;
-		} else {
-			id = cc770_read_reg(priv, msgobj[mo].id[1]);
-			id |= cc770_read_reg(priv, msgobj[mo].id[0]) << 8;
-			id >>= 5;
-		}
-
-		cf->can_id = id;
-		cf->can_dlc = get_can_dlc((config & 0xf0) >> 4);
-		for (i = 0; i < cf->can_dlc; i++)
-			cf->data[i] = cc770_read_reg(priv, msgobj[mo].data[i]);
-	}
-	netif_rx(skb);
-
-	stats->rx_packets++;
-	stats->rx_bytes += cf->can_dlc;
-}
-
-static int cc770_err(struct net_device *dev, u8 status)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	struct net_device_stats *stats = &dev->stats;
-	struct can_frame *cf;
-	struct sk_buff *skb;
-	u8 lec;
-
-	netdev_dbg(dev, "status interrupt (%#x)\n", status);
-
-	skb = alloc_can_err_skb(dev, &cf);
-	if (skb == NULL)
-		return -ENOMEM;
-
-	if (status & STAT_BOFF) {
-		/* Disable interrupts */
-		cc770_write_reg(priv, control, CTRL_INI);
-		cf->can_id |= CAN_ERR_BUSOFF;
-		priv->can.state = CAN_STATE_BUS_OFF;
-		can_bus_off(dev);
-	} else if (status & STAT_WARN) {
-		cf->can_id |= CAN_ERR_CRTL;
-		cf->data[1] = CAN_ERR_CRTL_RX_WARNING | CAN_ERR_CRTL_TX_WARNING;
-		priv->can.state = CAN_STATE_ERROR_WARNING;
-		priv->can.can_stats.error_warning++;
-	}
-
-	lec = status & STAT_LEC_MASK;
-	if (lec < 7 && lec > 0) {
-		if (lec == STAT_LEC_ACK) {
-			cf->can_id |= CAN_ERR_ACK;
-		} else {
-			cf->can_id |= CAN_ERR_PROT;
-			switch (lec) {
-			case STAT_LEC_STUFF:
-				cf->data[2] |= CAN_ERR_PROT_STUFF;
-				break;
-			case STAT_LEC_FORM:
-				cf->data[2] |= CAN_ERR_PROT_FORM;
-				break;
-			case STAT_LEC_BIT1:
-				cf->data[2] |= CAN_ERR_PROT_BIT1;
-				break;
-			case STAT_LEC_BIT0:
-				cf->data[2] |= CAN_ERR_PROT_BIT0;
-				break;
-			case STAT_LEC_CRC:
-				cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ;
-				break;
-			}
-		}
-	}
-
-	netif_rx(skb);
-
-	stats->rx_packets++;
-	stats->rx_bytes += cf->can_dlc;
-
-	return 0;
-}
-
-static int cc770_status_interrupt(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	u8 status;
-
-	status = cc770_read_reg(priv, status);
-	/* Reset the status register including RXOK and TXOK */
-	cc770_write_reg(priv, status, STAT_LEC_MASK);
-
-	if (status & (STAT_WARN | STAT_BOFF) ||
-	    (status & STAT_LEC_MASK) != STAT_LEC_MASK) {
-		cc770_err(dev, status);
-		return status & STAT_BOFF;
-	}
-
-	return 0;
-}
-
-static void cc770_rx_interrupt(struct net_device *dev, unsigned int o)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	struct net_device_stats *stats = &dev->stats;
-	unsigned int mo = obj2msgobj(o);
-	u8 ctrl1;
-
-	while (1) {
-		ctrl1 = cc770_read_reg(priv, msgobj[mo].ctrl1);
-
-		if (!(ctrl1 & NEWDAT_SET))  {
-			/* Check for RTR if additional functions are enabled */
-			if (priv->control_normal_mode & CTRL_EAF) {
-				if (!(cc770_read_reg(priv, msgobj[mo].ctrl0) &
-				      INTPND_SET))
-					break;
-			} else {
-				break;
-			}
-		}
-
-		if (ctrl1 & MSGLST_SET) {
-			stats->rx_over_errors++;
-			stats->rx_errors++;
-		}
-		if (mo < MSGOBJ_LAST)
-			cc770_write_reg(priv, msgobj[mo].ctrl1,
-					NEWDAT_RES | MSGLST_RES |
-					TXRQST_UNC | RMTPND_UNC);
-		cc770_rx(dev, mo, ctrl1);
-
-		cc770_write_reg(priv, msgobj[mo].ctrl0,
-				MSGVAL_SET | TXIE_RES |
-				RXIE_SET | INTPND_RES);
-		cc770_write_reg(priv, msgobj[mo].ctrl1,
-				NEWDAT_RES | MSGLST_RES |
-				TXRQST_RES | RMTPND_RES);
-	}
-}
-
-static void cc770_rtr_interrupt(struct net_device *dev, unsigned int o)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	unsigned int mo = obj2msgobj(o);
-	u8 ctrl0, ctrl1;
-
-	while (1) {
-		ctrl0 = cc770_read_reg(priv, msgobj[mo].ctrl0);
-		if (!(ctrl0 & INTPND_SET))
-			break;
-
-		ctrl1 = cc770_read_reg(priv, msgobj[mo].ctrl1);
-		cc770_rx(dev, mo, ctrl1);
-
-		cc770_write_reg(priv, msgobj[mo].ctrl0,
-				MSGVAL_SET | TXIE_RES |
-				RXIE_SET | INTPND_RES);
-		cc770_write_reg(priv, msgobj[mo].ctrl1,
-				NEWDAT_RES | CPUUPD_SET |
-				TXRQST_RES | RMTPND_RES);
-	}
-}
-
-static void cc770_tx_interrupt(struct net_device *dev, unsigned int o)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	struct net_device_stats *stats = &dev->stats;
-	unsigned int mo = obj2msgobj(o);
-
-	/* Nothing more to send, switch off interrupts */
-	cc770_write_reg(priv, msgobj[mo].ctrl0,
-			MSGVAL_RES | TXIE_RES | RXIE_RES | INTPND_RES);
-	/*
-	 * We had some cases of repeated IRQ so make sure the
-	 * INT is acknowledged
-	 */
-	cc770_write_reg(priv, msgobj[mo].ctrl0,
-			MSGVAL_UNC | TXIE_UNC | RXIE_UNC | INTPND_RES);
-
-	stats->tx_packets++;
-	can_get_echo_skb(dev, 0);
-	netif_wake_queue(dev);
-}
-
-irqreturn_t cc770_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = (struct net_device *)dev_id;
-	struct cc770_priv *priv = netdev_priv(dev);
-	u8 intid;
-	int o, n = 0;
-
-	/* Shared interrupts and IRQ off? */
-	if (priv->can.state == CAN_STATE_STOPPED)
-		return IRQ_NONE;
-
-	if (priv->pre_irq)
-		priv->pre_irq(priv);
-
-	while (n < CC770_MAX_IRQ) {
-		/* Read the highest pending interrupt request */
-		intid = cc770_read_reg(priv, interrupt);
-		if (!intid)
-			break;
-		n++;
-
-		if (intid == 1) {
-			/* Exit in case of bus-off */
-			if (cc770_status_interrupt(dev))
-				break;
-		} else {
-			o = intid2obj(intid);
-
-			if (o >= CC770_OBJ_MAX) {
-				netdev_err(dev, "Unexpected interrupt id %d\n",
-					   intid);
-				continue;
-			}
-
-			if (priv->obj_flags[o] & CC770_OBJ_FLAG_RTR)
-				cc770_rtr_interrupt(dev, o);
-			else if (priv->obj_flags[o] & CC770_OBJ_FLAG_RX)
-				cc770_rx_interrupt(dev, o);
-			else
-				cc770_tx_interrupt(dev, o);
-		}
-	}
-
-	if (priv->post_irq)
-		priv->post_irq(priv);
-
-	if (n >= CC770_MAX_IRQ)
-		netdev_dbg(dev, "%d messages handled in ISR", n);
-
-	return (n) ? IRQ_HANDLED : IRQ_NONE;
-}
-
-static int cc770_open(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-	int err;
-
-	/* set chip into reset mode */
-	set_reset_mode(dev);
-
-	/* common open */
-	err = open_candev(dev);
-	if (err)
-		return err;
-
-	err = request_irq(dev->irq, &cc770_interrupt, priv->irq_flags,
-			  dev->name, (void *)dev);
-	if (err) {
-		close_candev(dev);
-		return -EAGAIN;
-	}
-
-	/* init and start chip */
-	cc770_start(dev);
-	priv->open_time = jiffies;
-
-	netif_start_queue(dev);
-
-	return 0;
-}
-
-static int cc770_close(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-
-	netif_stop_queue(dev);
-	set_reset_mode(dev);
-
-	free_irq(dev->irq, (void *)dev);
-	close_candev(dev);
-
-	priv->open_time = 0;
-
-	return 0;
-}
-
-struct net_device *alloc_cc770dev(int sizeof_priv)
-{
-	struct net_device *dev;
-	struct cc770_priv *priv;
-
-	dev = alloc_candev(sizeof(struct cc770_priv) + sizeof_priv,
-			   CC770_ECHO_SKB_MAX);
-	if (!dev)
-		return NULL;
-
-	priv = netdev_priv(dev);
-
-	priv->dev = dev;
-	priv->can.bittiming_const = &cc770_bittiming_const;
-	priv->can.do_set_bittiming = cc770_set_bittiming;
-	priv->can.do_set_mode = cc770_set_mode;
-	priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;
-
-	memcpy(priv->obj_flags, cc770_obj_flags, sizeof(cc770_obj_flags));
-
-	if (sizeof_priv)
-		priv->priv = (void *)priv + sizeof(struct cc770_priv);
-
-	return dev;
-}
-EXPORT_SYMBOL_GPL(alloc_cc770dev);
-
-void free_cc770dev(struct net_device *dev)
-{
-	free_candev(dev);
-}
-EXPORT_SYMBOL_GPL(free_cc770dev);
-
-static const struct net_device_ops cc770_netdev_ops = {
-	.ndo_open = cc770_open,
-	.ndo_stop = cc770_close,
-	.ndo_start_xmit = cc770_start_xmit,
-};
-
-int register_cc770dev(struct net_device *dev)
-{
-	struct cc770_priv *priv = netdev_priv(dev);
-
-	if (!cc770_probe_chip(dev))
-		return -ENODEV;
-
-	dev->netdev_ops = &cc770_netdev_ops;
-
-	dev->flags |= IFF_ECHO;	/* we support local echo */
-
-	/* Should we use additional functions? */
-	if (!i82527_compat && priv->control_normal_mode & CTRL_EAF) {
-		priv->control_normal_mode = CTRL_IE | CTRL_EAF | CTRL_EIE;
-		netdev_dbg(dev, "i82527 mode with additional functions\n");
-	} else {
-		priv->control_normal_mode = CTRL_IE | CTRL_EIE;
-		netdev_dbg(dev, "strict i82527 compatibility mode\n");
-	}
-
-	chipset_init(priv);
-	set_reset_mode(dev);
-
-	return register_candev(dev);
-}
-EXPORT_SYMBOL_GPL(register_cc770dev);
-
-void unregister_cc770dev(struct net_device *dev)
-{
-	set_reset_mode(dev);
-	unregister_candev(dev);
-}
-EXPORT_SYMBOL_GPL(unregister_cc770dev);
-
-static __init int cc770_init(void)
-{
-	if (msgobj15_eff) {
-		cc770_obj_flags[CC770_OBJ_RX0] |= CC770_OBJ_FLAG_EFF;
-		cc770_obj_flags[CC770_OBJ_RX1] &= ~CC770_OBJ_FLAG_EFF;
-	}
-
-	pr_info("%s CAN netdevice driver\n", DRV_NAME);
-
-	return 0;
-}
-module_init(cc770_init);
-
-static __exit void cc770_exit(void)
-{
-	pr_info("%s: driver removed\n", DRV_NAME);
-}
-module_exit(cc770_exit);

drivers/net/can/cc770/cc770.h

@@ -1,247 +0,0 @@
-/*
- * cc770.h - Bosch CC770 and Intel AN82527 network device driver
- *
- * Copyright (C) 2009, 2011 Wolfgang Grandegger <wg@grandegger.com>
- *
- * Derived from the old Socket-CAN i82527 driver:
- *
- * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Volkswagen nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Alternatively, provided that this notice is retained in full, this
- * software may be distributed under the terms of the GNU General
- * Public License ("GPL") version 2, in which case the provisions of the
- * GPL apply INSTEAD OF those given above.
- *
- * The provided data structures and external interfaces from this code
- * are not restricted to be used by modules with a GPL compatible license.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * Send feedback to <socketcan-users@lists.berlios.de>
- */
-
-#ifndef CC770_DEV_H
-#define CC770_DEV_H
-
-#include <linux/can/dev.h>
-
-struct cc770_msgobj {
-	u8 ctrl0;
-	u8 ctrl1;
-	u8 id[4];
-	u8 config;
-	u8 data[8];
-	u8 dontuse;		/* padding */
-} __attribute__ ((packed));
-
-struct cc770_regs {
-	union {
-		struct cc770_msgobj msgobj[16]; /* Message object 1..15 */
-		struct {
-			u8 control;		/* Control Register */
-			u8 status;		/* Status Register */
-			u8 cpu_interface;	/* CPU Interface Register */
-			u8 dontuse1;
-			u8 high_speed_read[2];	/* High Speed Read */
-			u8 global_mask_std[2];	/* Standard Global Mask */
-			u8 global_mask_ext[4];	/* Extended Global Mask */
-			u8 msg15_mask[4];	/* Message 15 Mask */
-			u8 dontuse2[15];
-			u8 clkout;		/* Clock Out Register */
-			u8 dontuse3[15];
-			u8 bus_config;		/* Bus Configuration Register */
-			u8 dontuse4[15];
-			u8 bit_timing_0;	/* Bit Timing Register byte 0 */
-			u8 dontuse5[15];
-			u8 bit_timing_1;	/* Bit Timing Register byte 1 */
-			u8 dontuse6[15];
-			u8 interrupt;		/* Interrupt Register */
-			u8 dontuse7[15];
-			u8 rx_error_counter;	/* Receive Error Counter */
-			u8 dontuse8[15];
-			u8 tx_error_counter;	/* Transmit Error Counter */
-			u8 dontuse9[31];
-			u8 p1_conf;
-			u8 dontuse10[15];
-			u8 p2_conf;
-			u8 dontuse11[15];
-			u8 p1_in;
-			u8 dontuse12[15];
-			u8 p2_in;
-			u8 dontuse13[15];
-			u8 p1_out;
-			u8 dontuse14[15];
-			u8 p2_out;
-			u8 dontuse15[15];
-			u8 serial_reset_addr;
-		};
-	};
-} __attribute__ ((packed));
-
-/* Control Register (0x00) */
-#define CTRL_INI	0x01	/* Initialization */
-#define CTRL_IE		0x02	/* Interrupt Enable */
-#define CTRL_SIE	0x04	/* Status Interrupt Enable */
-#define CTRL_EIE	0x08	/* Error Interrupt Enable */
-#define CTRL_EAF	0x20	/* Enable additional functions */
-#define CTRL_CCE	0x40	/* Change Configuration Enable */
-
-/* Status Register (0x01) */
-#define STAT_LEC_STUFF	0x01	/* Stuff error */
-#define STAT_LEC_FORM	0x02	/* Form error */
-#define STAT_LEC_ACK	0x03	/* Acknowledgement error */
-#define STAT_LEC_BIT1	0x04	/* Bit1 error */
-#define STAT_LEC_BIT0	0x05	/* Bit0 error */
-#define STAT_LEC_CRC	0x06	/* CRC error */
-#define STAT_LEC_MASK	0x07	/* Last Error Code mask */
-#define STAT_TXOK	0x08	/* Transmit Message Successfully */
-#define STAT_RXOK	0x10	/* Receive Message Successfully */
-#define STAT_WAKE	0x20	/* Wake Up Status */
-#define STAT_WARN	0x40	/* Warning Status */
-#define STAT_BOFF	0x80	/* Bus Off Status */
-
-/* CPU Interface Register (0x02) */
-#define CPUIF_CEN	0x01	/* Clock Out Enable */
-#define CPUIF_MUX	0x04	/* Multiplex */
-#define CPUIF_SLP	0x08	/* Sleep */
-#define CPUIF_PWD	0x10	/* Power Down Mode */
-#define CPUIF_DMC	0x20	/* Divide Memory Clock */
-#define CPUIF_DSC	0x40	/* Divide System Clock */
-#define CPUIF_RST	0x80	/* Hardware Reset Status */
-
-/* Clock Out Register (0x1f) */
-#define CLKOUT_CD_MASK  0x0f	/* Clock Divider mask */
-#define CLKOUT_SL_MASK	0x30	/* Slew Rate mask */
-#define CLKOUT_SL_SHIFT	4
-
-/* Bus Configuration Register (0x2f) */
-#define BUSCFG_DR0	0x01	/* Disconnect RX0 Input / Select RX input */
-#define BUSCFG_DR1	0x02	/* Disconnect RX1 Input / Silent mode */
-#define BUSCFG_DT1	0x08	/* Disconnect TX1 Output */
-#define BUSCFG_POL	0x20	/* Polarity dominant or recessive */
-#define BUSCFG_CBY	0x40	/* Input Comparator Bypass */
-
-/* Message Control Register 0 (Base Address + 0x0) */
-#define INTPND_RES	0x01	/* No Interrupt pending */
-#define INTPND_SET	0x02	/* Interrupt pending */
-#define INTPND_UNC	0x03
-#define RXIE_RES	0x04	/* Receive Interrupt Disable */
-#define RXIE_SET	0x08	/* Receive Interrupt Enable */
-#define RXIE_UNC	0x0c
-#define TXIE_RES	0x10	/* Transmit Interrupt Disable */
-#define TXIE_SET	0x20	/* Transmit Interrupt Enable */
-#define TXIE_UNC	0x30
-#define MSGVAL_RES	0x40	/* Message Invalid */
-#define MSGVAL_SET	0x80	/* Message Valid */
-#define MSGVAL_UNC	0xc0
-
-/* Message Control Register 1 (Base Address + 0x01) */
-#define NEWDAT_RES	0x01	/* No New Data */
-#define NEWDAT_SET	0x02	/* New Data */
-#define NEWDAT_UNC	0x03
-#define MSGLST_RES	0x04	/* No Message Lost */
-#define MSGLST_SET	0x08	/* Message Lost */
-#define MSGLST_UNC	0x0c
-#define CPUUPD_RES	0x04	/* No CPU Updating */
-#define CPUUPD_SET	0x08	/* CPU Updating */
-#define CPUUPD_UNC	0x0c
-#define TXRQST_RES	0x10	/* No Transmission Request */
-#define TXRQST_SET	0x20	/* Transmission Request */
-#define TXRQST_UNC	0x30
-#define RMTPND_RES	0x40	/* No Remote Request Pending */
-#define RMTPND_SET	0x80	/* Remote Request Pending */
-#define RMTPND_UNC	0xc0
-
-/* Message Configuration Register (Base Address + 0x06) */
-#define MSGCFG_XTD	0x04	/* Extended Identifier */
-#define MSGCFG_DIR	0x08	/* Direction is Transmit */
-
-#define MSGOBJ_FIRST	1
-#define MSGOBJ_LAST	15
-
-#define CC770_IO_SIZE	0x100
-#define CC770_MAX_IRQ	20	/* max. number of interrupts handled in ISR */
-
-#define CC770_ECHO_SKB_MAX	1
-
-#define cc770_read_reg(priv, member)					\
-	priv->read_reg(priv, offsetof(struct cc770_regs, member))
-
-#define cc770_write_reg(priv, member, value)				\
-	priv->write_reg(priv, offsetof(struct cc770_regs, member), value)
-
-/*
- * Message objects and flags used by this driver
- */
-#define CC770_OBJ_FLAG_RX 	0x01
-#define CC770_OBJ_FLAG_RTR	0x02
-#define CC770_OBJ_FLAG_EFF	0x04
-
-enum {
-	CC770_OBJ_RX0 = 0,	/* for receiving normal messages */
-	CC770_OBJ_RX1,		/* for receiving normal messages */
-	CC770_OBJ_RX_RTR0,	/* for receiving remote transmission requests */
-	CC770_OBJ_RX_RTR1,	/* for receiving remote transmission requests */
-	CC770_OBJ_TX,		/* for sending messages */
-	CC770_OBJ_MAX
-};
-
-#define obj2msgobj(o)	(MSGOBJ_LAST - (o)) /* message object 11..15 */
-
-/*
- * CC770 private data structure
- */
-struct cc770_priv {
-	struct can_priv can;	/* must be the first member */
-	int open_time;
-	struct sk_buff *echo_skb;
-
-	/* the lower-layer is responsible for appropriate locking */
-	u8 (*read_reg)(const struct cc770_priv *priv, int reg);
-	void (*write_reg)(const struct cc770_priv *priv, int reg, u8 val);
-	void (*pre_irq)(const struct cc770_priv *priv);
-	void (*post_irq)(const struct cc770_priv *priv);
-
-	void *priv;		/* for board-specific data */
-	struct net_device *dev;
-
-	void __iomem *reg_base;	/* ioremap'ed address to registers */
-	unsigned long irq_flags;	/* for request_irq() */
-
-	unsigned char obj_flags[CC770_OBJ_MAX];
-	u8 control_normal_mode;	/* Control register for normal mode */
-	u8 cpu_interface;	/* CPU interface register */
-	u8 clkout;		/* Clock out register */
-	u8 bus_config;		/* Bus conffiguration register */
-};
-
-struct net_device *alloc_cc770dev(int sizeof_priv);
-void free_cc770dev(struct net_device *dev);
-int register_cc770dev(struct net_device *dev);
-void unregister_cc770dev(struct net_device *dev);
-
-#endif /* CC770_DEV_H */

drivers/net/can/cc770/cc770_isa.c

@@ -1,337 +0,0 @@
-/*
- * Copyright (C) 2009, 2011 Wolfgang Grandegger <wg@grandegger.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the version 2 of the GNU General Public License
- * as published by the Free Software Foundation
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/kernel.h>
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/can.h>
-#include <linux/can/dev.h>
-
-#include "cc770.h"
-
-#define DRV_NAME "cc770_isa"
-
-#define MAXDEV 8
-
-MODULE_AUTHOR("Wolfgang Grandegger <wg@grandegger.com>");
-MODULE_DESCRIPTION("Socket-CAN driver for CC770 on the ISA bus");
-MODULE_LICENSE("GPL v2");
-
-#define CLK_DEFAULT	16000000	/* 16 MHz */
-#define BCR_DEFAULT	0x00
-#define COR_DEFAULT	0x00
-
-static unsigned long port[MAXDEV];
-static unsigned long mem[MAXDEV];
-static int __devinitdata irq[MAXDEV];
-static int __devinitdata clk[MAXDEV];
-static u8 __devinitdata cir[MAXDEV] = {[0 ... (MAXDEV - 1)] = 0xff};
-static u8 __devinitdata bcr[MAXDEV] = {[0 ... (MAXDEV - 1)] = 0xff};
-static u8 __devinitdata cor[MAXDEV] = {[0 ... (MAXDEV - 1)] = 0xff};
-static int __devinitdata indirect[MAXDEV] = {[0 ... (MAXDEV - 1)] = -1};
-
-module_param_array(port, ulong, NULL, S_IRUGO);
-MODULE_PARM_DESC(port, "I/O port number");
-
-module_param_array(mem, ulong, NULL, S_IRUGO);
-MODULE_PARM_DESC(mem, "I/O memory address");
-
-module_param_array(indirect, int, NULL, S_IRUGO);
-MODULE_PARM_DESC(indirect, "Indirect access via address and data port");
-
-module_param_array(irq, int, NULL, S_IRUGO);
-MODULE_PARM_DESC(irq, "IRQ number");
-
-module_param_array(clk, int, NULL, S_IRUGO);
-MODULE_PARM_DESC(clk, "External oscillator clock frequency "
-		 "(default=16000000 [16 MHz])");
-
-module_param_array(cir, byte, NULL, S_IRUGO);
-MODULE_PARM_DESC(cir, "CPU interface register (default=0x40 [CPU_DSC])");
-
-module_param_array(bcr, byte, NULL, S_IRUGO);
-MODULE_PARM_DESC(ocr, "Bus configuration register (default=0x00)");
-
-module_param_array(cor, byte, NULL, S_IRUGO);
-MODULE_PARM_DESC(cor, "Clockout register (default=0x00)");
-
-#define CC770_IOSIZE          0x20
-#define CC770_IOSIZE_INDIRECT 0x02
-
-static struct platform_device *cc770_isa_devs[MAXDEV];
-
-static u8 cc770_isa_mem_read_reg(const struct cc770_priv *priv, int reg)
-{
-	return readb(priv->reg_base + reg);
-}
-
-static void cc770_isa_mem_write_reg(const struct cc770_priv *priv,
-				      int reg, u8 val)
-{
-	writeb(val, priv->reg_base + reg);
-}
-
-static u8 cc770_isa_port_read_reg(const struct cc770_priv *priv, int reg)
-{
-	return inb((unsigned long)priv->reg_base + reg);
-}
-
-static void cc770_isa_port_write_reg(const struct cc770_priv *priv,
-				       int reg, u8 val)
-{
-	outb(val, (unsigned long)priv->reg_base + reg);
-}
-
-static u8 cc770_isa_port_read_reg_indirect(const struct cc770_priv *priv,
-					     int reg)
-{
-	unsigned long base = (unsigned long)priv->reg_base;
-
-	outb(reg, base);
-	return inb(base + 1);
-}
-
-static void cc770_isa_port_write_reg_indirect(const struct cc770_priv *priv,
-						int reg, u8 val)
-{
-	unsigned long base = (unsigned long)priv->reg_base;
-
-	outb(reg, base);
-	outb(val, base + 1);
-}
-
-static int __devinit cc770_isa_probe(struct platform_device *pdev)
-{
-	struct net_device *dev;
-	struct cc770_priv *priv;
-	void __iomem *base = NULL;
-	int iosize = CC770_IOSIZE;
-	int idx = pdev->id;
-	int err;
-	u32 clktmp;
-
-	dev_dbg(&pdev->dev, "probing idx=%d: port=%#lx, mem=%#lx, irq=%d\n",
-		idx, port[idx], mem[idx], irq[idx]);
-	if (mem[idx]) {
-		if (!request_mem_region(mem[idx], iosize, DRV_NAME)) {
-			err = -EBUSY;
-			goto exit;
-		}
-		base = ioremap_nocache(mem[idx], iosize);
-		if (!base) {
-			err = -ENOMEM;
-			goto exit_release;
-		}
-	} else {
-		if (indirect[idx] > 0 ||
-		    (indirect[idx] == -1 && indirect[0] > 0))
-			iosize = CC770_IOSIZE_INDIRECT;
-		if (!request_region(port[idx], iosize, DRV_NAME)) {
-			err = -EBUSY;
-			goto exit;
-		}
-	}
-
-	dev = alloc_cc770dev(0);
-	if (!dev) {
-		err = -ENOMEM;
-		goto exit_unmap;
-	}
-	priv = netdev_priv(dev);
-
-	dev->irq = irq[idx];
-	priv->irq_flags = IRQF_SHARED;
-	if (mem[idx]) {
-		priv->reg_base = base;
-		dev->base_addr = mem[idx];
-		priv->read_reg = cc770_isa_mem_read_reg;
-		priv->write_reg = cc770_isa_mem_write_reg;
-	} else {
-		priv->reg_base = (void __iomem *)port[idx];
-		dev->base_addr = port[idx];
-
-		if (iosize == CC770_IOSIZE_INDIRECT) {
-			priv->read_reg = cc770_isa_port_read_reg_indirect;
-			priv->write_reg = cc770_isa_port_write_reg_indirect;
-		} else {
-			priv->read_reg = cc770_isa_port_read_reg;
-			priv->write_reg = cc770_isa_port_write_reg;
-		}
-	}
-
-	if (clk[idx])
-		clktmp = clk[idx];
-	else if (clk[0])
-		clktmp = clk[0];
-	else
-		clktmp = CLK_DEFAULT;
-	priv->can.clock.freq = clktmp;
-
-	if (cir[idx] != 0xff) {
-		priv->cpu_interface = cir[idx] & 0xff;
-	} else if (cir[0] != 0xff) {
-		priv->cpu_interface = cir[0] & 0xff;
-	} else {
-		/* The system clock may not exceed 10 MHz */
-		if (clktmp > 10000000) {
-			priv->cpu_interface |= CPUIF_DSC;
-			clktmp /= 2;
-		}
-		/* The memory clock may not exceed 8 MHz */
-		if (clktmp > 8000000)
-			priv->cpu_interface |= CPUIF_DMC;
-	}
-
-	if (priv->cpu_interface & CPUIF_DSC)
-		priv->can.clock.freq /= 2;
-
-	if (bcr[idx] != 0xff)
-		priv->bus_config = bcr[idx] & 0xff;
-	else if (bcr[0] != 0xff)
-		priv->bus_config = bcr[0] & 0xff;
-	else
-		priv->bus_config = BCR_DEFAULT;
-
-	if (cor[idx] != 0xff)
-		priv->clkout = cor[idx];
-	else if (cor[0] != 0xff)
-		priv->clkout = cor[0] & 0xff;
-	else
-		priv->clkout = COR_DEFAULT;
-
-	dev_set_drvdata(&pdev->dev, dev);
-	SET_NETDEV_DEV(dev, &pdev->dev);
-
-	err = register_cc770dev(dev);
-	if (err) {
-		dev_err(&pdev->dev, "registering %s failed (err=%d)\n",
-			DRV_NAME, err);
-		goto exit_unmap;
-	}
-
-	dev_info(&pdev->dev, "%s device registered (reg_base=0x%p, irq=%d)\n",
-		 DRV_NAME, priv->reg_base, dev->irq);
-	return 0;
-
- exit_unmap:
-	if (mem[idx])
-		iounmap(base);
- exit_release:
-	if (mem[idx])
-		release_mem_region(mem[idx], iosize);
-	else
-		release_region(port[idx], iosize);
- exit:
-	return err;
-}
-
-static int __devexit cc770_isa_remove(struct platform_device *pdev)
-{
-	struct net_device *dev = dev_get_drvdata(&pdev->dev);
-	struct cc770_priv *priv = netdev_priv(dev);
-	int idx = pdev->id;
-
-	unregister_cc770dev(dev);
-	dev_set_drvdata(&pdev->dev, NULL);
-
-	if (mem[idx]) {
-		iounmap(priv->reg_base);
-		release_mem_region(mem[idx], CC770_IOSIZE);
-	} else {
-		if (priv->read_reg == cc770_isa_port_read_reg_indirect)
-			release_region(port[idx], CC770_IOSIZE_INDIRECT);
-		else
-			release_region(port[idx], CC770_IOSIZE);
-	}
-	free_cc770dev(dev);
-
-	return 0;
-}
-
-static struct platform_driver cc770_isa_driver = {
-	.probe = cc770_isa_probe,
-	.remove = __devexit_p(cc770_isa_remove),
-	.driver = {
-		.name = DRV_NAME,
-		.owner = THIS_MODULE,
-	},
-};
-
-static int __init cc770_isa_init(void)
-{
-	int idx, err;
-
-	for (idx = 0; idx < MAXDEV; idx++) {
-		if ((port[idx] || mem[idx]) && irq[idx]) {
-			cc770_isa_devs[idx] =
-				platform_device_alloc(DRV_NAME, idx);
-			if (!cc770_isa_devs[idx]) {
-				err = -ENOMEM;
-				goto exit_free_devices;
-			}
-			err = platform_device_add(cc770_isa_devs[idx]);
-			if (err) {
-				platform_device_put(cc770_isa_devs[idx]);
-				goto exit_free_devices;
-			}
-			pr_debug("%s: platform device %d: port=%#lx, mem=%#lx, "
-				 "irq=%d\n",
-				 DRV_NAME, idx, port[idx], mem[idx], irq[idx]);
-		} else if (idx == 0 || port[idx] || mem[idx]) {
-				pr_err("%s: insufficient parameters supplied\n",
-				       DRV_NAME);
-				err = -EINVAL;
-				goto exit_free_devices;
-		}
-	}
-
-	err = platform_driver_register(&cc770_isa_driver);
-	if (err)
-		goto exit_free_devices;
-
-	pr_info("Legacy %s driver for max. %d devices registered\n",
-		DRV_NAME, MAXDEV);
-
-	return 0;
-
-exit_free_devices:
-	while (--idx >= 0) {
-		if (cc770_isa_devs[idx])
-			platform_device_unregister(cc770_isa_devs[idx]);
-	}
-
-	return err;
-}
-module_init(cc770_isa_init);
-
-static void __exit cc770_isa_exit(void)
-{
-	int idx;
-
-	platform_driver_unregister(&cc770_isa_driver);
-	for (idx = 0; idx < MAXDEV; idx++) {
-		if (cc770_isa_devs[idx])
-			platform_device_unregister(cc770_isa_devs[idx]);
-	}
-}
-module_exit(cc770_isa_exit);