misc: delete bh1780 driver

The Rohm BH1780 ambient light sensor has a new driver with extended
functionality (proper runtime PM) in the appropriate framework IIO,
it can be found at:
drivers/iio/light/bh1780.c

The MISC driver symbol CONFIG_SENSORS_BH1780 does not appear in any
defconfigs, so it should safe to delete.

Cc: Hemanth V <hemanthv@ti.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/Kconfig

@@ -345,16 +345,6 @@ config SENSORS_TSL2550
 	  This driver can also be built as a module.  If so, the module
 	  will be called tsl2550.
 
-config SENSORS_BH1780
-	tristate "ROHM BH1780GLI ambient light sensor"
-	depends on I2C && SYSFS
-	help
-	  If you say yes here you get support for the ROHM BH1780GLI
-	  ambient light sensor.
-
-	  This driver can also be built as a module.  If so, the module
-	  will be called bh1780gli.
-
 config SENSORS_BH1770
          tristate "BH1770GLC / SFH7770 combined ALS - Proximity sensor"
          depends on I2C

drivers/misc/Makefile

@@ -19,7 +19,6 @@ obj-$(CONFIG_TIFM_CORE)       	+= tifm_core.o
 obj-$(CONFIG_TIFM_7XX1)       	+= tifm_7xx1.o
 obj-$(CONFIG_PHANTOM)		+= phantom.o
 obj-$(CONFIG_QCOM_COINCELL)	+= qcom-coincell.o
-obj-$(CONFIG_SENSORS_BH1780)	+= bh1780gli.o
 obj-$(CONFIG_SENSORS_BH1770)	+= bh1770glc.o
 obj-$(CONFIG_SENSORS_APDS990X)	+= apds990x.o
 obj-$(CONFIG_SGI_IOC4)		+= ioc4.o

drivers/misc/bh1780gli.c

-/*
- * bh1780gli.c
- * ROHM Ambient Light Sensor Driver
- *
- * Copyright (C) 2010 Texas Instruments
- * Author: Hemanth V <hemanthv@ti.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 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, see <http://www.gnu.org/licenses/>.
- */
-#include <linux/i2c.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/of.h>
-
-#define BH1780_REG_CONTROL	0x80
-#define BH1780_REG_PARTID	0x8A
-#define BH1780_REG_MANFID	0x8B
-#define BH1780_REG_DLOW	0x8C
-#define BH1780_REG_DHIGH	0x8D
-
-#define BH1780_REVMASK		(0xf)
-#define BH1780_POWMASK		(0x3)
-#define BH1780_POFF		(0x0)
-#define BH1780_PON		(0x3)
-
-/* power on settling time in ms */
-#define BH1780_PON_DELAY	2
-
-struct bh1780_data {
-	struct i2c_client *client;
-	int power_state;
-	/* lock for sysfs operations */
-	struct mutex lock;
-};
-
-static int bh1780_write(struct bh1780_data *ddata, u8 reg, u8 val, char *msg)
-{
-	int ret = i2c_smbus_write_byte_data(ddata->client, reg, val);
-	if (ret < 0)
-		dev_err(&ddata->client->dev,
-			"i2c_smbus_write_byte_data failed error %d Register (%s)\n",
-			ret, msg);
-	return ret;
-}
-
-static int bh1780_read(struct bh1780_data *ddata, u8 reg, char *msg)
-{
-	int ret = i2c_smbus_read_byte_data(ddata->client, reg);
-	if (ret < 0)
-		dev_err(&ddata->client->dev,
-			"i2c_smbus_read_byte_data failed error %d Register (%s)\n",
-			ret, msg);
-	return ret;
-}
-
-static ssize_t bh1780_show_lux(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct bh1780_data *ddata = platform_get_drvdata(pdev);
-	int lsb, msb;
-
-	lsb = bh1780_read(ddata, BH1780_REG_DLOW, "DLOW");
-	if (lsb < 0)
-		return lsb;
-
-	msb = bh1780_read(ddata, BH1780_REG_DHIGH, "DHIGH");
-	if (msb < 0)
-		return msb;
-
-	return sprintf(buf, "%d\n", (msb << 8) | lsb);
-}
-
-static ssize_t bh1780_show_power_state(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct bh1780_data *ddata = platform_get_drvdata(pdev);
-	int state;
-
-	state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");
-	if (state < 0)
-		return state;
-
-	return sprintf(buf, "%d\n", state & BH1780_POWMASK);
-}
-
-static ssize_t bh1780_store_power_state(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t count)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct bh1780_data *ddata = platform_get_drvdata(pdev);
-	unsigned long val;
-	int error;
-
-	error = kstrtoul(buf, 0, &val);
-	if (error)
-		return error;
-
-	if (val < BH1780_POFF || val > BH1780_PON)
-		return -EINVAL;
-
-	mutex_lock(&ddata->lock);
-
-	error = bh1780_write(ddata, BH1780_REG_CONTROL, val, "CONTROL");
-	if (error < 0) {
-		mutex_unlock(&ddata->lock);
-		return error;
-	}
-
-	msleep(BH1780_PON_DELAY);
-	ddata->power_state = val;
-	mutex_unlock(&ddata->lock);
-
-	return count;
-}
-
-static DEVICE_ATTR(lux, S_IRUGO, bh1780_show_lux, NULL);
-
-static DEVICE_ATTR(power_state, S_IWUSR | S_IRUGO,
-		bh1780_show_power_state, bh1780_store_power_state);
-
-static struct attribute *bh1780_attributes[] = {
-	&dev_attr_power_state.attr,
-	&dev_attr_lux.attr,
-	NULL
-};
-
-static const struct attribute_group bh1780_attr_group = {
-	.attrs = bh1780_attributes,
-};
-
-static int bh1780_probe(struct i2c_client *client,
-						const struct i2c_device_id *id)
-{
-	int ret;
-	struct bh1780_data *ddata;
-	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
-
-	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
-		return -EIO;
-
-	ddata = devm_kzalloc(&client->dev, sizeof(struct bh1780_data),
-			     GFP_KERNEL);
-	if (ddata == NULL)
-		return -ENOMEM;
-
-	ddata->client = client;
-	i2c_set_clientdata(client, ddata);
-
-	ret = bh1780_read(ddata, BH1780_REG_PARTID, "PART ID");
-	if (ret < 0)
-		return ret;
-
-	dev_info(&client->dev, "Ambient Light Sensor, Rev : %d\n",
-			(ret & BH1780_REVMASK));
-
-	mutex_init(&ddata->lock);
-
-	return sysfs_create_group(&client->dev.kobj, &bh1780_attr_group);
-}
-
-static int bh1780_remove(struct i2c_client *client)
-{
-	sysfs_remove_group(&client->dev.kobj, &bh1780_attr_group);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int bh1780_suspend(struct device *dev)
-{
-	struct bh1780_data *ddata;
-	int state, ret;
-	struct i2c_client *client = to_i2c_client(dev);
-
-	ddata = i2c_get_clientdata(client);
-	state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");
-	if (state < 0)
-		return state;
-
-	ddata->power_state = state & BH1780_POWMASK;
-
-	ret = bh1780_write(ddata, BH1780_REG_CONTROL, BH1780_POFF,
-				"CONTROL");
-
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-static int bh1780_resume(struct device *dev)
-{
-	struct bh1780_data *ddata;
-	int state, ret;
-	struct i2c_client *client = to_i2c_client(dev);
-
-	ddata = i2c_get_clientdata(client);
-	state = ddata->power_state;
-	ret = bh1780_write(ddata, BH1780_REG_CONTROL, state,
-				"CONTROL");
-
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-#endif /* CONFIG_PM_SLEEP */
-
-static SIMPLE_DEV_PM_OPS(bh1780_pm, bh1780_suspend, bh1780_resume);
-
-static const struct i2c_device_id bh1780_id[] = {
-	{ "bh1780", 0 },
-	{ },
-};
-
-MODULE_DEVICE_TABLE(i2c, bh1780_id);
-
-#ifdef CONFIG_OF
-static const struct of_device_id of_bh1780_match[] = {
-	{ .compatible = "rohm,bh1780gli", },
-	{},
-};
-
-MODULE_DEVICE_TABLE(of, of_bh1780_match);
-#endif
-
-static struct i2c_driver bh1780_driver = {
-	.probe		= bh1780_probe,
-	.remove		= bh1780_remove,
-	.id_table	= bh1780_id,
-	.driver = {
-		.name = "bh1780",
-		.pm	= &bh1780_pm,
-		.of_match_table = of_match_ptr(of_bh1780_match),
-	},
-};
-
-module_i2c_driver(bh1780_driver);
-
-MODULE_DESCRIPTION("BH1780GLI Ambient Light Sensor Driver");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");