1 files changed, 0 insertions, 331 deletions
diff --git a/ANDROID_3.4.5/drivers/i2c/busses/i2c-taos-evm.c b/ANDROID_3.4.5/drivers/i2c/busses/i2c-taos-evm.c
deleted file mode 100644
index 26c352a0..00000000
--- a/ANDROID_3.4.5/drivers/i2c/busses/i2c-taos-evm.c
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- * Driver for the TAOS evaluation modules
- * These devices include an I2C master which can be controlled over the
- * serial port.
- *
- * Copyright (C) 2007 Jean Delvare <khali@linux-fr.org>
- *
- * 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; version 2 of the License.
- *
- * 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/delay.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/serio.h>
-#include <linux/init.h>
-#include <linux/i2c.h>
-
-#define TAOS_BUFFER_SIZE	63
-
-#define TAOS_STATE_INIT		0
-#define TAOS_STATE_IDLE		1
-#define TAOS_STATE_EOFF		2
-#define TAOS_STATE_RECV		3
-
-#define TAOS_CMD_RESET		0x12
-#define TAOS_CMD_ECHO_ON	'+'
-#define TAOS_CMD_ECHO_OFF	'-'
-
-static DECLARE_WAIT_QUEUE_HEAD(wq);
-
-struct taos_data {
-	struct i2c_adapter adapter;
-	struct i2c_client *client;
-	int state;
-	u8 addr;		/* last used address */
-	unsigned char buffer[TAOS_BUFFER_SIZE];
-	unsigned int pos;	/* position inside the buffer */
-};
-
-/* TAOS TSL2550 EVM */
-static struct i2c_board_info tsl2550_info = {
-	I2C_BOARD_INFO("tsl2550", 0x39),
-};
-
-/* Instantiate i2c devices based on the adapter name */
-static struct i2c_client *taos_instantiate_device(struct i2c_adapter *adapter)
-{
-	if (!strncmp(adapter->name, "TAOS TSL2550 EVM", 16)) {
-		dev_info(&adapter->dev, "Instantiating device %s at 0x%02x\n",
-			tsl2550_info.type, tsl2550_info.addr);
-		return i2c_new_device(adapter, &tsl2550_info);
-	}
-
-	return NULL;
-}
-
-static int taos_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
-			   unsigned short flags, char read_write, u8 command,
-			   int size, union i2c_smbus_data *data)
-{
-	struct serio *serio = adapter->algo_data;
-	struct taos_data *taos = serio_get_drvdata(serio);
-	char *p;
-
-	/* Encode our transaction. "@" is for the device address, "$" for the
-	   SMBus command and "#" for the data. */
-	p = taos->buffer;
-
-	/* The device remembers the last used address, no need to send it
-	   again if it's the same */
-	if (addr != taos->addr)
-		p += sprintf(p, "@%02X", addr);
-
-	switch (size) {
-	case I2C_SMBUS_BYTE:
-		if (read_write == I2C_SMBUS_WRITE)
-			sprintf(p, "$#%02X", command);
-		else
-			sprintf(p, "$");
-		break;
-	case I2C_SMBUS_BYTE_DATA:
-		if (read_write == I2C_SMBUS_WRITE)
-			sprintf(p, "$%02X#%02X", command, data->byte);
-		else
-			sprintf(p, "$%02X", command);
-		break;
-	default:
-		dev_warn(&adapter->dev, "Unsupported transaction %d\n", size);
-		return -EOPNOTSUPP;
-	}
-
-	/* Send the transaction to the TAOS EVM */
-	dev_dbg(&adapter->dev, "Command buffer: %s\n", taos->buffer);
-	for (p = taos->buffer; *p; p++)
-		serio_write(serio, *p);
-
-	taos->addr = addr;
-
-	/* Start the transaction and read the answer */
-	taos->pos = 0;
-	taos->state = TAOS_STATE_RECV;
-	serio_write(serio, read_write == I2C_SMBUS_WRITE ? '>' : '<');
-	wait_event_interruptible_timeout(wq, taos->state == TAOS_STATE_IDLE,
-					 msecs_to_jiffies(150));
-	if (taos->state != TAOS_STATE_IDLE
-	 || taos->pos != 5) {
-		dev_err(&adapter->dev, "Transaction timeout (pos=%d)\n",
-			taos->pos);
-		return -EIO;
-	}
-	dev_dbg(&adapter->dev, "Answer buffer: %s\n", taos->buffer);
-
-	/* Interpret the returned string */
-	p = taos->buffer + 1;
-	p[3] = '\0';
-	if (!strcmp(p, "NAK"))
-		return -ENODEV;
-
-	if (read_write == I2C_SMBUS_WRITE) {
-		if (!strcmp(p, "ACK"))
-			return 0;
-	} else {
-		if (p[0] == 'x') {
-			data->byte = simple_strtol(p + 1, NULL, 16);
-			return 0;
-		}
-	}
-
-	return -EIO;
-}
-
-static u32 taos_smbus_func(struct i2c_adapter *adapter)
-{
-	return I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA;
-}
-
-static const struct i2c_algorithm taos_algorithm = {
-	.smbus_xfer	= taos_smbus_xfer,
-	.functionality	= taos_smbus_func,
-};
-
-static irqreturn_t taos_interrupt(struct serio *serio, unsigned char data,
-				  unsigned int flags)
-{
-	struct taos_data *taos = serio_get_drvdata(serio);
-
-	switch (taos->state) {
-	case TAOS_STATE_INIT:
-		taos->buffer[taos->pos++] = data;
-		if (data == ':'
-		 || taos->pos == TAOS_BUFFER_SIZE - 1) {
-			taos->buffer[taos->pos] = '\0';
-			taos->state = TAOS_STATE_IDLE;
-			wake_up_interruptible(&wq);
-		}
-		break;
-	case TAOS_STATE_EOFF:
-		taos->state = TAOS_STATE_IDLE;
-		wake_up_interruptible(&wq);
-		break;
-	case TAOS_STATE_RECV:
-		taos->buffer[taos->pos++] = data;
-		if (data == ']') {
-			taos->buffer[taos->pos] = '\0';
-			taos->state = TAOS_STATE_IDLE;
-			wake_up_interruptible(&wq);
-		}
-		break;
-	}
-
-	return IRQ_HANDLED;
-}
-
-/* Extract the adapter name from the buffer received after reset.
-   The buffer is modified and a pointer inside the buffer is returned. */
-static char *taos_adapter_name(char *buffer)
-{
-	char *start, *end;
-
-	start = strstr(buffer, "TAOS ");
-	if (!start)
-		return NULL;
-
-	end = strchr(start, '\r');
-	if (!end)
-		return NULL;
-	*end = '\0';
-
-	return start;
-}
-
-static int taos_connect(struct serio *serio, struct serio_driver *drv)
-{
-	struct taos_data *taos;
-	struct i2c_adapter *adapter;
-	char *name;
-	int err;
-
-	taos = kzalloc(sizeof(struct taos_data), GFP_KERNEL);
-	if (!taos) {
-		err = -ENOMEM;
-		goto exit;
-	}
-	taos->state = TAOS_STATE_INIT;
-	serio_set_drvdata(serio, taos);
-
-	err = serio_open(serio, drv);
-	if (err)
-		goto exit_kfree;
-
-	adapter = &taos->adapter;
-	adapter->owner = THIS_MODULE;
-	adapter->algo = &taos_algorithm;
-	adapter->algo_data = serio;
-	adapter->dev.parent = &serio->dev;
-
-	/* Reset the TAOS evaluation module to identify it */
-	serio_write(serio, TAOS_CMD_RESET);
-	wait_event_interruptible_timeout(wq, taos->state == TAOS_STATE_IDLE,
-					 msecs_to_jiffies(2000));
-
-	if (taos->state != TAOS_STATE_IDLE) {
-		err = -ENODEV;
-		dev_err(&serio->dev, "TAOS EVM reset failed (state=%d, "
-			"pos=%d)\n", taos->state, taos->pos);
-		goto exit_close;
-	}
-
-	name = taos_adapter_name(taos->buffer);
-	if (!name) {
-		err = -ENODEV;
-		dev_err(&serio->dev, "TAOS EVM identification failed\n");
-		goto exit_close;
-	}
-	strlcpy(adapter->name, name, sizeof(adapter->name));
-
-	/* Turn echo off for better performance */
-	taos->state = TAOS_STATE_EOFF;
-	serio_write(serio, TAOS_CMD_ECHO_OFF);
-
-	wait_event_interruptible_timeout(wq, taos->state == TAOS_STATE_IDLE,
-					 msecs_to_jiffies(250));
-	if (taos->state != TAOS_STATE_IDLE) {
-		err = -ENODEV;
-		dev_err(&serio->dev, "TAOS EVM echo off failed "
-			"(state=%d)\n", taos->state);
-		goto exit_close;
-	}
-
-	err = i2c_add_adapter(adapter);
-	if (err)
-		goto exit_close;
-	dev_info(&serio->dev, "Connected to TAOS EVM\n");
-
-	taos->client = taos_instantiate_device(adapter);
-	return 0;
-
- exit_close:
-	serio_close(serio);
- exit_kfree:
-	serio_set_drvdata(serio, NULL);
-	kfree(taos);
- exit:
-	return err;
-}
-
-static void taos_disconnect(struct serio *serio)
-{
-	struct taos_data *taos = serio_get_drvdata(serio);
-
-	if (taos->client)
-		i2c_unregister_device(taos->client);
-	i2c_del_adapter(&taos->adapter);
-	serio_close(serio);
-	serio_set_drvdata(serio, NULL);
-	kfree(taos);
-
-	dev_info(&serio->dev, "Disconnected from TAOS EVM\n");
-}
-
-static struct serio_device_id taos_serio_ids[] = {
-	{
-		.type	= SERIO_RS232,
-		.proto	= SERIO_TAOSEVM,
-		.id	= SERIO_ANY,
-		.extra	= SERIO_ANY,
-	},
-	{ 0 }
-};
-MODULE_DEVICE_TABLE(serio, taos_serio_ids);
-
-static struct serio_driver taos_drv = {
-	.driver		= {
-		.name	= "taos-evm",
-	},
-	.description	= "TAOS evaluation module driver",
-	.id_table	= taos_serio_ids,
-	.connect	= taos_connect,
-	.disconnect	= taos_disconnect,
-	.interrupt	= taos_interrupt,
-};
-
-static int __init taos_init(void)
-{
-	return serio_register_driver(&taos_drv);
-}
-
-static void __exit taos_exit(void)
-{
-	serio_unregister_driver(&taos_drv);
-}
-
-MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
-MODULE_DESCRIPTION("TAOS evaluation module driver");
-MODULE_LICENSE("GPL");
-
-module_init(taos_init);
-module_exit(taos_exit);