1 files changed, 0 insertions, 618 deletions

diff --git a/ANDROID_3.4.5/drivers/i2c/busses/scx200_acb.c b/ANDROID_3.4.5/drivers/i2c/busses/scx200_acb.c
deleted file mode 100644
index 2eacb778..00000000
--- a/ANDROID_3.4.5/drivers/i2c/busses/scx200_acb.c
+++ /dev/null
@@ -1,618 +0,0 @@
-/*
-    Copyright (c) 2001,2002 Christer Weinigel <wingel@nano-system.com>
-
-    National Semiconductor SCx200 ACCESS.bus support
-    Also supports the AMD CS5535 and AMD CS5536
-
-    Based on i2c-keywest.c which is:
-        Copyright (c) 2001 Benjamin Herrenschmidt <benh@kernel.crashing.org>
-        Copyright (c) 2000 Philip Edelbrock <phil@stimpy.netroedge.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.
-
-    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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/i2c.h>
-#include <linux/pci.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-
-#include <linux/scx200.h>
-
-#define NAME "scx200_acb"
-
-MODULE_AUTHOR("Christer Weinigel <wingel@nano-system.com>");
-MODULE_DESCRIPTION("NatSemi SCx200 ACCESS.bus Driver");
-MODULE_ALIAS("platform:cs5535-smb");
-MODULE_LICENSE("GPL");
-
-#define MAX_DEVICES 4
-static int base[MAX_DEVICES] = { 0x820, 0x840 };
-module_param_array(base, int, NULL, 0);
-MODULE_PARM_DESC(base, "Base addresses for the ACCESS.bus controllers");
-
-#define POLL_TIMEOUT	(HZ/5)
-
-enum scx200_acb_state {
-	state_idle,
-	state_address,
-	state_command,
-	state_repeat_start,
-	state_quick,
-	state_read,
-	state_write,
-};
-
-static const char *scx200_acb_state_name[] = {
-	"idle",
-	"address",
-	"command",
-	"repeat_start",
-	"quick",
-	"read",
-	"write",
-};
-
-/* Physical interface */
-struct scx200_acb_iface {
-	struct scx200_acb_iface *next;
-	struct i2c_adapter adapter;
-	unsigned base;
-	struct mutex mutex;
-
-	/* State machine data */
-	enum scx200_acb_state state;
-	int result;
-	u8 address_byte;
-	u8 command;
-	u8 *ptr;
-	char needs_reset;
-	unsigned len;
-};
-
-/* Register Definitions */
-#define ACBSDA		(iface->base + 0)
-#define ACBST		(iface->base + 1)
-#define    ACBST_SDAST		0x40 /* SDA Status */
-#define    ACBST_BER		0x20
-#define    ACBST_NEGACK		0x10 /* Negative Acknowledge */
-#define    ACBST_STASTR		0x08 /* Stall After Start */
-#define    ACBST_MASTER		0x02
-#define ACBCST		(iface->base + 2)
-#define    ACBCST_BB		0x02
-#define ACBCTL1		(iface->base + 3)
-#define    ACBCTL1_STASTRE	0x80
-#define    ACBCTL1_NMINTE	0x40
-#define    ACBCTL1_ACK		0x10
-#define    ACBCTL1_STOP		0x02
-#define    ACBCTL1_START	0x01
-#define ACBADDR		(iface->base + 4)
-#define ACBCTL2		(iface->base + 5)
-#define    ACBCTL2_ENABLE	0x01
-
-/************************************************************************/
-
-static void scx200_acb_machine(struct scx200_acb_iface *iface, u8 status)
-{
-	const char *errmsg;
-
-	dev_dbg(&iface->adapter.dev, "state %s, status = 0x%02x\n",
-		scx200_acb_state_name[iface->state], status);
-
-	if (status & ACBST_BER) {
-		errmsg = "bus error";
-		goto error;
-	}
-	if (!(status & ACBST_MASTER)) {
-		errmsg = "not master";
-		goto error;
-	}
-	if (status & ACBST_NEGACK) {
-		dev_dbg(&iface->adapter.dev, "negative ack in state %s\n",
-			scx200_acb_state_name[iface->state]);
-
-		iface->state = state_idle;
-		iface->result = -ENXIO;
-
-		outb(inb(ACBCTL1) | ACBCTL1_STOP, ACBCTL1);
-		outb(ACBST_STASTR | ACBST_NEGACK, ACBST);
-
-		/* Reset the status register */
-		outb(0, ACBST);
-		return;
-	}
-
-	switch (iface->state) {
-	case state_idle:
-		dev_warn(&iface->adapter.dev, "interrupt in idle state\n");
-		break;
-
-	case state_address:
-		/* Do a pointer write first */
-		outb(iface->address_byte & ~1, ACBSDA);
-
-		iface->state = state_command;
-		break;
-
-	case state_command:
-		outb(iface->command, ACBSDA);
-
-		if (iface->address_byte & 1)
-			iface->state = state_repeat_start;
-		else
-			iface->state = state_write;
-		break;
-
-	case state_repeat_start:
-		outb(inb(ACBCTL1) | ACBCTL1_START, ACBCTL1);
-		/* fallthrough */
-
-	case state_quick:
-		if (iface->address_byte & 1) {
-			if (iface->len == 1)
-				outb(inb(ACBCTL1) | ACBCTL1_ACK, ACBCTL1);
-			else
-				outb(inb(ACBCTL1) & ~ACBCTL1_ACK, ACBCTL1);
-			outb(iface->address_byte, ACBSDA);
-
-			iface->state = state_read;
-		} else {
-			outb(iface->address_byte, ACBSDA);
-
-			iface->state = state_write;
-		}
-		break;
-
-	case state_read:
-		/* Set ACK if _next_ byte will be the last one */
-		if (iface->len == 2)
-			outb(inb(ACBCTL1) | ACBCTL1_ACK, ACBCTL1);
-		else
-			outb(inb(ACBCTL1) & ~ACBCTL1_ACK, ACBCTL1);
-
-		if (iface->len == 1) {
-			iface->result = 0;
-			iface->state = state_idle;
-			outb(inb(ACBCTL1) | ACBCTL1_STOP, ACBCTL1);
-		}
-
-		*iface->ptr++ = inb(ACBSDA);
-		--iface->len;
-
-		break;
-
-	case state_write:
-		if (iface->len == 0) {
-			iface->result = 0;
-			iface->state = state_idle;
-			outb(inb(ACBCTL1) | ACBCTL1_STOP, ACBCTL1);
-			break;
-		}
-
-		outb(*iface->ptr++, ACBSDA);
-		--iface->len;
-
-		break;
-	}
-
-	return;
-
- error:
-	dev_err(&iface->adapter.dev,
-		"%s in state %s (addr=0x%02x, len=%d, status=0x%02x)\n", errmsg,
-		scx200_acb_state_name[iface->state], iface->address_byte,
-		iface->len, status);
-
-	iface->state = state_idle;
-	iface->result = -EIO;
-	iface->needs_reset = 1;
-}
-
-static void scx200_acb_poll(struct scx200_acb_iface *iface)
-{
-	u8 status;
-	unsigned long timeout;
-
-	timeout = jiffies + POLL_TIMEOUT;
-	while (1) {
-		status = inb(ACBST);
-
-		/* Reset the status register to avoid the hang */
-		outb(0, ACBST);
-
-		if ((status & (ACBST_SDAST|ACBST_BER|ACBST_NEGACK)) != 0) {
-			scx200_acb_machine(iface, status);
-			return;
-		}
-		if (time_after(jiffies, timeout))
-			break;
-		cpu_relax();
-		cond_resched();
-	}
-
-	dev_err(&iface->adapter.dev, "timeout in state %s\n",
-		scx200_acb_state_name[iface->state]);
-
-	iface->state = state_idle;
-	iface->result = -EIO;
-	iface->needs_reset = 1;
-}
-
-static void scx200_acb_reset(struct scx200_acb_iface *iface)
-{
-	/* Disable the ACCESS.bus device and Configure the SCL
-	   frequency: 16 clock cycles */
-	outb(0x70, ACBCTL2);
-	/* Polling mode */
-	outb(0, ACBCTL1);
-	/* Disable slave address */
-	outb(0, ACBADDR);
-	/* Enable the ACCESS.bus device */
-	outb(inb(ACBCTL2) | ACBCTL2_ENABLE, ACBCTL2);
-	/* Free STALL after START */
-	outb(inb(ACBCTL1) & ~(ACBCTL1_STASTRE | ACBCTL1_NMINTE), ACBCTL1);
-	/* Send a STOP */
-	outb(inb(ACBCTL1) | ACBCTL1_STOP, ACBCTL1);
-	/* Clear BER, NEGACK and STASTR bits */
-	outb(ACBST_BER | ACBST_NEGACK | ACBST_STASTR, ACBST);
-	/* Clear BB bit */
-	outb(inb(ACBCST) | ACBCST_BB, ACBCST);
-}
-
-static s32 scx200_acb_smbus_xfer(struct i2c_adapter *adapter,
-				 u16 address, unsigned short flags,
-				 char rw, u8 command, int size,
-				 union i2c_smbus_data *data)
-{
-	struct scx200_acb_iface *iface = i2c_get_adapdata(adapter);
-	int len;
-	u8 *buffer;
-	u16 cur_word;
-	int rc;
-
-	switch (size) {
-	case I2C_SMBUS_QUICK:
-		len = 0;
-		buffer = NULL;
-		break;
-
-	case I2C_SMBUS_BYTE:
-		len = 1;
-		buffer = rw ? &data->byte : &command;
-		break;
-
-	case I2C_SMBUS_BYTE_DATA:
-		len = 1;
-		buffer = &data->byte;
-		break;
-
-	case I2C_SMBUS_WORD_DATA:
-		len = 2;
-		cur_word = cpu_to_le16(data->word);
-		buffer = (u8 *)&cur_word;
-		break;
-
-	case I2C_SMBUS_I2C_BLOCK_DATA:
-		len = data->block[0];
-		if (len == 0 || len > I2C_SMBUS_BLOCK_MAX)
-			return -EINVAL;
-		buffer = &data->block[1];
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	dev_dbg(&adapter->dev,
-		"size=%d, address=0x%x, command=0x%x, len=%d, read=%d\n",
-		size, address, command, len, rw);
-
-	if (!len && rw == I2C_SMBUS_READ) {
-		dev_dbg(&adapter->dev, "zero length read\n");
-		return -EINVAL;
-	}
-
-	mutex_lock(&iface->mutex);
-
-	iface->address_byte = (address << 1) | rw;
-	iface->command = command;
-	iface->ptr = buffer;
-	iface->len = len;
-	iface->result = -EINVAL;
-	iface->needs_reset = 0;
-
-	outb(inb(ACBCTL1) | ACBCTL1_START, ACBCTL1);
-
-	if (size == I2C_SMBUS_QUICK || size == I2C_SMBUS_BYTE)
-		iface->state = state_quick;
-	else
-		iface->state = state_address;
-
-	while (iface->state != state_idle)
-		scx200_acb_poll(iface);
-
-	if (iface->needs_reset)
-		scx200_acb_reset(iface);
-
-	rc = iface->result;
-
-	mutex_unlock(&iface->mutex);
-
-	if (rc == 0 && size == I2C_SMBUS_WORD_DATA && rw == I2C_SMBUS_READ)
-		data->word = le16_to_cpu(cur_word);
-
-#ifdef DEBUG
-	dev_dbg(&adapter->dev, "transfer done, result: %d", rc);
-	if (buffer) {
-		int i;
-		printk(" data:");
-		for (i = 0; i < len; ++i)
-			printk(" %02x", buffer[i]);
-	}
-	printk("\n");
-#endif
-
-	return rc;
-}
-
-static u32 scx200_acb_func(struct i2c_adapter *adapter)
-{
-	return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
-	       I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
-	       I2C_FUNC_SMBUS_I2C_BLOCK;
-}
-
-/* For now, we only handle combined mode (smbus) */
-static const struct i2c_algorithm scx200_acb_algorithm = {
-	.smbus_xfer	= scx200_acb_smbus_xfer,
-	.functionality	= scx200_acb_func,
-};
-
-static struct scx200_acb_iface *scx200_acb_list;
-static DEFINE_MUTEX(scx200_acb_list_mutex);
-
-static __devinit int scx200_acb_probe(struct scx200_acb_iface *iface)
-{
-	u8 val;
-
-	/* Disable the ACCESS.bus device and Configure the SCL
-	   frequency: 16 clock cycles */
-	outb(0x70, ACBCTL2);
-
-	if (inb(ACBCTL2) != 0x70) {
-		pr_debug(NAME ": ACBCTL2 readback failed\n");
-		return -ENXIO;
-	}
-
-	outb(inb(ACBCTL1) | ACBCTL1_NMINTE, ACBCTL1);
-
-	val = inb(ACBCTL1);
-	if (val) {
-		pr_debug(NAME ": disabled, but ACBCTL1=0x%02x\n",
-			val);
-		return -ENXIO;
-	}
-
-	outb(inb(ACBCTL2) | ACBCTL2_ENABLE, ACBCTL2);
-
-	outb(inb(ACBCTL1) | ACBCTL1_NMINTE, ACBCTL1);
-
-	val = inb(ACBCTL1);
-	if ((val & ACBCTL1_NMINTE) != ACBCTL1_NMINTE) {
-		pr_debug(NAME ": enabled, but NMINTE won't be set, "
-			 "ACBCTL1=0x%02x\n", val);
-		return -ENXIO;
-	}
-
-	return 0;
-}
-
-static __devinit struct scx200_acb_iface *scx200_create_iface(const char *text,
-		struct device *dev, int index)
-{
-	struct scx200_acb_iface *iface;
-	struct i2c_adapter *adapter;
-
-	iface = kzalloc(sizeof(*iface), GFP_KERNEL);
-	if (!iface) {
-		printk(KERN_ERR NAME ": can't allocate memory\n");
-		return NULL;
-	}
-
-	adapter = &iface->adapter;
-	i2c_set_adapdata(adapter, iface);
-	snprintf(adapter->name, sizeof(adapter->name), "%s ACB%d", text, index);
-	adapter->owner = THIS_MODULE;
-	adapter->algo = &scx200_acb_algorithm;
-	adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
-	adapter->dev.parent = dev;
-
-	mutex_init(&iface->mutex);
-
-	return iface;
-}
-
-static int __devinit scx200_acb_create(struct scx200_acb_iface *iface)
-{
-	struct i2c_adapter *adapter;
-	int rc;
-
-	adapter = &iface->adapter;
-
-	rc = scx200_acb_probe(iface);
-	if (rc) {
-		printk(KERN_WARNING NAME ": probe failed\n");
-		return rc;
-	}
-
-	scx200_acb_reset(iface);
-
-	if (i2c_add_adapter(adapter) < 0) {
-		printk(KERN_ERR NAME ": failed to register\n");
-		return -ENODEV;
-	}
-
-	if (!adapter->dev.parent) {
-		/* If there's no dev, we're tracking (ISA) ifaces manually */
-		mutex_lock(&scx200_acb_list_mutex);
-		iface->next = scx200_acb_list;
-		scx200_acb_list = iface;
-		mutex_unlock(&scx200_acb_list_mutex);
-	}
-
-	return 0;
-}
-
-static struct scx200_acb_iface * __devinit scx200_create_dev(const char *text,
-		unsigned long base, int index, struct device *dev)
-{
-	struct scx200_acb_iface *iface;
-	int rc;
-
-	iface = scx200_create_iface(text, dev, index);
-
-	if (iface == NULL)
-		return NULL;
-
-	if (!request_region(base, 8, iface->adapter.name)) {
-		printk(KERN_ERR NAME ": can't allocate io 0x%lx-0x%lx\n",
-		       base, base + 8 - 1);
-		goto errout_free;
-	}
-
-	iface->base = base;
-	rc = scx200_acb_create(iface);
-
-	if (rc == 0)
-		return iface;
-
-	release_region(base, 8);
- errout_free:
-	kfree(iface);
-	return NULL;
-}
-
-static int __devinit scx200_probe(struct platform_device *pdev)
-{
-	struct scx200_acb_iface *iface;
-	struct resource *res;
-
-	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "can't fetch device resource info\n");
-		return -ENODEV;
-	}
-
-	iface = scx200_create_dev("CS5535", res->start, 0, &pdev->dev);
-	if (!iface)
-		return -EIO;
-
-	dev_info(&pdev->dev, "SCx200 device '%s' registered\n",
-			iface->adapter.name);
-	platform_set_drvdata(pdev, iface);
-
-	return 0;
-}
-
-static void __devexit scx200_cleanup_iface(struct scx200_acb_iface *iface)
-{
-	i2c_del_adapter(&iface->adapter);
-	release_region(iface->base, 8);
-	kfree(iface);
-}
-
-static int __devexit scx200_remove(struct platform_device *pdev)
-{
-	struct scx200_acb_iface *iface;
-
-	iface = platform_get_drvdata(pdev);
-	platform_set_drvdata(pdev, NULL);
-	scx200_cleanup_iface(iface);
-
-	return 0;
-}
-
-static struct platform_driver scx200_pci_driver = {
-	.driver = {
-		.name = "cs5535-smb",
-		.owner = THIS_MODULE,
-	},
-	.probe = scx200_probe,
-	.remove = __devexit_p(scx200_remove),
-};
-
-static DEFINE_PCI_DEVICE_TABLE(scx200_isa) = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SCx200_BRIDGE) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SC1100_BRIDGE) },
-	{ 0, }
-};
-
-static __init void scx200_scan_isa(void)
-{
-	int i;
-
-	if (!pci_dev_present(scx200_isa))
-		return;
-
-	for (i = 0; i < MAX_DEVICES; ++i) {
-		if (base[i] == 0)
-			continue;
-
-		/* XXX: should we care about failures? */
-		scx200_create_dev("SCx200", base[i], i, NULL);
-	}
-}
-
-static int __init scx200_acb_init(void)
-{
-	pr_debug(NAME ": NatSemi SCx200 ACCESS.bus Driver\n");
-
-	/* First scan for ISA-based devices */
-	scx200_scan_isa();	/* XXX: should we care about errors? */
-
-	/* If at least one bus was created, init must succeed */
-	if (scx200_acb_list)
-		return 0;
-
-	/* No ISA devices; register the platform driver for PCI-based devices */
-	return platform_driver_register(&scx200_pci_driver);
-}
-
-static void __exit scx200_acb_cleanup(void)
-{
-	struct scx200_acb_iface *iface;
-
-	platform_driver_unregister(&scx200_pci_driver);
-
-	mutex_lock(&scx200_acb_list_mutex);
-	while ((iface = scx200_acb_list) != NULL) {
-		scx200_acb_list = iface->next;
-		mutex_unlock(&scx200_acb_list_mutex);
-
-		scx200_cleanup_iface(iface);
-
-		mutex_lock(&scx200_acb_list_mutex);
-	}
-	mutex_unlock(&scx200_acb_list_mutex);
-}
-
-module_init(scx200_acb_init);
-module_exit(scx200_acb_cleanup);