1 files changed, 0 insertions, 379 deletions
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
deleted file mode 100644
index 6a2fb3fbb3d..00000000000
--- a/drivers/gpio/pca953x.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/*
- *  pca953x.c - 4/8/16 bit I/O ports
- *
- *  Copyright (C) 2005 Ben Gardner <bgardner@wabtec.com>
- *  Copyright (C) 2007 Marvell International Ltd.
- *
- *  Derived from drivers/i2c/chips/pca9539.c
- *
- *  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.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/gpio.h>
-#include <linux/i2c.h>
-#include <linux/i2c/pca953x.h>
-#ifdef CONFIG_OF_GPIO
-#include <linux/of_platform.h>
-#include <linux/of_gpio.h>
-#endif
-
-#define PCA953X_INPUT          0
-#define PCA953X_OUTPUT         1
-#define PCA953X_INVERT         2
-#define PCA953X_DIRECTION      3
-
-static const struct i2c_device_id pca953x_id[] = {
-	{ "pca9534", 8, },
-	{ "pca9535", 16, },
-	{ "pca9536", 4, },
-	{ "pca9537", 4, },
-	{ "pca9538", 8, },
-	{ "pca9539", 16, },
-	{ "pca9554", 8, },
-	{ "pca9555", 16, },
-	{ "pca9556", 8, },
-	{ "pca9557", 8, },
-
-	{ "max7310", 8, },
-	{ "max7315", 8, },
-	{ "pca6107", 8, },
-	{ "tca6408", 8, },
-	{ "tca6416", 16, },
-	/* NYET:  { "tca6424", 24, }, */
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, pca953x_id);
-
-struct pca953x_chip {
-	unsigned gpio_start;
-	uint16_t reg_output;
-	uint16_t reg_direction;
-
-	struct i2c_client *client;
-	struct pca953x_platform_data *dyn_pdata;
-	struct gpio_chip gpio_chip;
-	char **names;
-};
-
-static int pca953x_write_reg(struct pca953x_chip *chip, int reg, uint16_t val)
-{
-	int ret;
-
-	if (chip->gpio_chip.ngpio <= 8)
-		ret = i2c_smbus_write_byte_data(chip->client, reg, val);
-	else
-		ret = i2c_smbus_write_word_data(chip->client, reg << 1, val);
-
-	if (ret < 0) {
-		dev_err(&chip->client->dev, "failed writing register\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int pca953x_read_reg(struct pca953x_chip *chip, int reg, uint16_t *val)
-{
-	int ret;
-
-	if (chip->gpio_chip.ngpio <= 8)
-		ret = i2c_smbus_read_byte_data(chip->client, reg);
-	else
-		ret = i2c_smbus_read_word_data(chip->client, reg << 1);
-
-	if (ret < 0) {
-		dev_err(&chip->client->dev, "failed reading register\n");
-		return ret;
-	}
-
-	*val = (uint16_t)ret;
-	return 0;
-}
-
-static int pca953x_gpio_direction_input(struct gpio_chip *gc, unsigned off)
-{
-	struct pca953x_chip *chip;
-	uint16_t reg_val;
-	int ret;
-
-	chip = container_of(gc, struct pca953x_chip, gpio_chip);
-
-	reg_val = chip->reg_direction | (1u << off);
-	ret = pca953x_write_reg(chip, PCA953X_DIRECTION, reg_val);
-	if (ret)
-		return ret;
-
-	chip->reg_direction = reg_val;
-	return 0;
-}
-
-static int pca953x_gpio_direction_output(struct gpio_chip *gc,
-		unsigned off, int val)
-{
-	struct pca953x_chip *chip;
-	uint16_t reg_val;
-	int ret;
-
-	chip = container_of(gc, struct pca953x_chip, gpio_chip);
-
-	/* set output level */
-	if (val)
-		reg_val = chip->reg_output | (1u << off);
-	else
-		reg_val = chip->reg_output & ~(1u << off);
-
-	ret = pca953x_write_reg(chip, PCA953X_OUTPUT, reg_val);
-	if (ret)
-		return ret;
-
-	chip->reg_output = reg_val;
-
-	/* then direction */
-	reg_val = chip->reg_direction & ~(1u << off);
-	ret = pca953x_write_reg(chip, PCA953X_DIRECTION, reg_val);
-	if (ret)
-		return ret;
-
-	chip->reg_direction = reg_val;
-	return 0;
-}
-
-static int pca953x_gpio_get_value(struct gpio_chip *gc, unsigned off)
-{
-	struct pca953x_chip *chip;
-	uint16_t reg_val;
-	int ret;
-
-	chip = container_of(gc, struct pca953x_chip, gpio_chip);
-
-	ret = pca953x_read_reg(chip, PCA953X_INPUT, &reg_val);
-	if (ret < 0) {
-		/* NOTE:  diagnostic already emitted; that's all we should
-		 * do unless gpio_*_value_cansleep() calls become different
-		 * from their nonsleeping siblings (and report faults).
-		 */
-		return 0;
-	}
-
-	return (reg_val & (1u << off)) ? 1 : 0;
-}
-
-static void pca953x_gpio_set_value(struct gpio_chip *gc, unsigned off, int val)
-{
-	struct pca953x_chip *chip;
-	uint16_t reg_val;
-	int ret;
-
-	chip = container_of(gc, struct pca953x_chip, gpio_chip);
-
-	if (val)
-		reg_val = chip->reg_output | (1u << off);
-	else
-		reg_val = chip->reg_output & ~(1u << off);
-
-	ret = pca953x_write_reg(chip, PCA953X_OUTPUT, reg_val);
-	if (ret)
-		return;
-
-	chip->reg_output = reg_val;
-}
-
-static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios)
-{
-	struct gpio_chip *gc;
-
-	gc = &chip->gpio_chip;
-
-	gc->direction_input  = pca953x_gpio_direction_input;
-	gc->direction_output = pca953x_gpio_direction_output;
-	gc->get = pca953x_gpio_get_value;
-	gc->set = pca953x_gpio_set_value;
-	gc->can_sleep = 1;
-
-	gc->base = chip->gpio_start;
-	gc->ngpio = gpios;
-	gc->label = chip->client->name;
-	gc->dev = &chip->client->dev;
-	gc->owner = THIS_MODULE;
-	gc->names = chip->names;
-}
-
-/*
- * Handlers for alternative sources of platform_data
- */
-#ifdef CONFIG_OF_GPIO
-/*
- * Translate OpenFirmware node properties into platform_data
- */
-static struct pca953x_platform_data *
-pca953x_get_alt_pdata(struct i2c_client *client)
-{
-	struct pca953x_platform_data *pdata;
-	struct device_node *node;
-	const uint16_t *val;
-
-	node = dev_archdata_get_node(&client->dev.archdata);
-	if (node == NULL)
-		return NULL;
-
-	pdata = kzalloc(sizeof(struct pca953x_platform_data), GFP_KERNEL);
-	if (pdata == NULL) {
-		dev_err(&client->dev, "Unable to allocate platform_data\n");
-		return NULL;
-	}
-
-	pdata->gpio_base = -1;
-	val = of_get_property(node, "linux,gpio-base", NULL);
-	if (val) {
-		if (*val < 0)
-			dev_warn(&client->dev,
-				 "invalid gpio-base in device tree\n");
-		else
-			pdata->gpio_base = *val;
-	}
-
-	val = of_get_property(node, "polarity", NULL);
-	if (val)
-		pdata->invert = *val;
-
-	return pdata;
-}
-#else
-static struct pca953x_platform_data *
-pca953x_get_alt_pdata(struct i2c_client *client)
-{
-	return NULL;
-}
-#endif
-
-static int __devinit pca953x_probe(struct i2c_client *client,
-				   const struct i2c_device_id *id)
-{
-	struct pca953x_platform_data *pdata;
-	struct pca953x_chip *chip;
-	int ret;
-
-	chip = kzalloc(sizeof(struct pca953x_chip), GFP_KERNEL);
-	if (chip == NULL)
-		return -ENOMEM;
-
-	pdata = client->dev.platform_data;
-	if (pdata == NULL) {
-		pdata = pca953x_get_alt_pdata(client);
-		/*
-		 * Unlike normal platform_data, this is allocated
-		 * dynamically and must be freed in the driver
-		 */
-		chip->dyn_pdata = pdata;
-	}
-
-	if (pdata == NULL) {
-		dev_dbg(&client->dev, "no platform data\n");
-		ret = -EINVAL;
-		goto out_failed;
-	}
-
-	chip->client = client;
-
-	chip->gpio_start = pdata->gpio_base;
-
-	chip->names = pdata->names;
-
-	/* initialize cached registers from their original values.
-	 * we can't share this chip with another i2c master.
-	 */
-	pca953x_setup_gpio(chip, id->driver_data);
-
-	ret = pca953x_read_reg(chip, PCA953X_OUTPUT, &chip->reg_output);
-	if (ret)
-		goto out_failed;
-
-	ret = pca953x_read_reg(chip, PCA953X_DIRECTION, &chip->reg_direction);
-	if (ret)
-		goto out_failed;
-
-	/* set platform specific polarity inversion */
-	ret = pca953x_write_reg(chip, PCA953X_INVERT, pdata->invert);
-	if (ret)
-		goto out_failed;
-
-
-	ret = gpiochip_add(&chip->gpio_chip);
-	if (ret)
-		goto out_failed;
-
-	if (pdata->setup) {
-		ret = pdata->setup(client, chip->gpio_chip.base,
-				chip->gpio_chip.ngpio, pdata->context);
-		if (ret < 0)
-			dev_warn(&client->dev, "setup failed, %d\n", ret);
-	}
-
-	i2c_set_clientdata(client, chip);
-	return 0;
-
-out_failed:
-	kfree(chip->dyn_pdata);
-	kfree(chip);
-	return ret;
-}
-
-static int pca953x_remove(struct i2c_client *client)
-{
-	struct pca953x_platform_data *pdata = client->dev.platform_data;
-	struct pca953x_chip *chip = i2c_get_clientdata(client);
-	int ret = 0;
-
-	if (pdata->teardown) {
-		ret = pdata->teardown(client, chip->gpio_chip.base,
-				chip->gpio_chip.ngpio, pdata->context);
-		if (ret < 0) {
-			dev_err(&client->dev, "%s failed, %d\n",
-					"teardown", ret);
-			return ret;
-		}
-	}
-
-	ret = gpiochip_remove(&chip->gpio_chip);
-	if (ret) {
-		dev_err(&client->dev, "%s failed, %d\n",
-				"gpiochip_remove()", ret);
-		return ret;
-	}
-
-	kfree(chip->dyn_pdata);
-	kfree(chip);
-	return 0;
-}
-
-static struct i2c_driver pca953x_driver = {
-	.driver = {
-		.name	= "pca953x",
-	},
-	.probe		= pca953x_probe,
-	.remove		= pca953x_remove,
-	.id_table	= pca953x_id,
-};
-
-static int __init pca953x_init(void)
-{
-	return i2c_add_driver(&pca953x_driver);
-}
-/* register after i2c postcore initcall and before
- * subsys initcalls that may rely on these GPIOs
- */
-subsys_initcall(pca953x_init);
-
-static void __exit pca953x_exit(void)
-{
-	i2c_del_driver(&pca953x_driver);
-}
-module_exit(pca953x_exit);
-
-MODULE_AUTHOR("eric miao <eric.miao@marvell.com>");
-MODULE_DESCRIPTION("GPIO expander driver for PCA953x");
-MODULE_LICENSE("GPL");