From 670027c507e99521d416994a18a498def9ef2ea3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Sat, 22 Oct 2016 19:31:08 -0300 Subject: Linux-libre 4.8.3-gnu --- drivers/misc/bh1780gli.c | 259 ----------------------------------------------- 1 file changed, 259 deletions(-) delete mode 100644 drivers/misc/bh1780gli.c (limited to 'drivers/misc/bh1780gli.c') diff --git a/drivers/misc/bh1780gli.c b/drivers/misc/bh1780gli.c deleted file mode 100644 index 7f90ce5a5..000000000 --- a/drivers/misc/bh1780gli.c +++ /dev/null @@ -1,259 +0,0 @@ -/* - * bh1780gli.c - * ROHM Ambient Light Sensor Driver - * - * Copyright (C) 2010 Texas Instruments - * Author: Hemanth V - * - * 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 . - */ -#include -#include -#include -#include -#include -#include -#include - -#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 "); -- cgit v1.2.3