summaryrefslogtreecommitdiffstats
path: root/drivers/hwmon/lis3lv02d_i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hwmon/lis3lv02d_i2c.c')
-rw-r--r--drivers/hwmon/lis3lv02d_i2c.c279
1 files changed, 0 insertions, 279 deletions
diff --git a/drivers/hwmon/lis3lv02d_i2c.c b/drivers/hwmon/lis3lv02d_i2c.c
deleted file mode 100644
index 8853afce85c..00000000000
--- a/drivers/hwmon/lis3lv02d_i2c.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/*
- * drivers/hwmon/lis3lv02d_i2c.c
- *
- * Implements I2C interface for lis3lv02d (STMicroelectronics) accelerometer.
- * Driver is based on corresponding SPI driver written by Daniel Mack
- * (lis3lv02d_spi.c (C) 2009 Daniel Mack <daniel@caiaq.de> ).
- *
- * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
- *
- * Contact: Samu Onkalo <samu.p.onkalo@nokia.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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/i2c.h>
-#include <linux/pm_runtime.h>
-#include <linux/delay.h>
-#include "lis3lv02d.h"
-
-#define DRV_NAME "lis3lv02d_i2c"
-
-static const char reg_vdd[] = "Vdd";
-static const char reg_vdd_io[] = "Vdd_IO";
-
-static int lis3_reg_ctrl(struct lis3lv02d *lis3, bool state)
-{
- int ret;
- if (state == LIS3_REG_OFF) {
- ret = regulator_bulk_disable(ARRAY_SIZE(lis3->regulators),
- lis3->regulators);
- } else {
- ret = regulator_bulk_enable(ARRAY_SIZE(lis3->regulators),
- lis3->regulators);
- /* Chip needs time to wakeup. Not mentioned in datasheet */
- usleep_range(10000, 20000);
- }
- return ret;
-}
-
-static inline s32 lis3_i2c_write(struct lis3lv02d *lis3, int reg, u8 value)
-{
- struct i2c_client *c = lis3->bus_priv;
- return i2c_smbus_write_byte_data(c, reg, value);
-}
-
-static inline s32 lis3_i2c_read(struct lis3lv02d *lis3, int reg, u8 *v)
-{
- struct i2c_client *c = lis3->bus_priv;
- *v = i2c_smbus_read_byte_data(c, reg);
- return 0;
-}
-
-static inline s32 lis3_i2c_blockread(struct lis3lv02d *lis3, int reg, int len,
- u8 *v)
-{
- struct i2c_client *c = lis3->bus_priv;
- reg |= (1 << 7); /* 7th bit enables address auto incrementation */
- return i2c_smbus_read_i2c_block_data(c, reg, len, v);
-}
-
-static int lis3_i2c_init(struct lis3lv02d *lis3)
-{
- u8 reg;
- int ret;
-
- if (lis3->reg_ctrl)
- lis3_reg_ctrl(lis3, LIS3_REG_ON);
-
- lis3->read(lis3, WHO_AM_I, &reg);
- if (reg != lis3->whoami)
- printk(KERN_ERR "lis3: power on failure\n");
-
- /* power up the device */
- ret = lis3->read(lis3, CTRL_REG1, &reg);
- if (ret < 0)
- return ret;
-
- reg |= CTRL1_PD0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
- return lis3->write(lis3, CTRL_REG1, reg);
-}
-
-/* Default axis mapping but it can be overwritten by platform data */
-static union axis_conversion lis3lv02d_axis_map =
- { .as_array = { LIS3_DEV_X, LIS3_DEV_Y, LIS3_DEV_Z } };
-
-static int __devinit lis3lv02d_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int ret = 0;
- struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
-
- if (pdata) {
- /* Regulator control is optional */
- if (pdata->driver_features & LIS3_USE_REGULATOR_CTRL)
- lis3_dev.reg_ctrl = lis3_reg_ctrl;
-
- if ((pdata->driver_features & LIS3_USE_BLOCK_READ) &&
- (i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_I2C_BLOCK)))
- lis3_dev.blkread = lis3_i2c_blockread;
-
- if (pdata->axis_x)
- lis3lv02d_axis_map.x = pdata->axis_x;
-
- if (pdata->axis_y)
- lis3lv02d_axis_map.y = pdata->axis_y;
-
- if (pdata->axis_z)
- lis3lv02d_axis_map.z = pdata->axis_z;
-
- if (pdata->setup_resources)
- ret = pdata->setup_resources();
-
- if (ret)
- goto fail;
- }
-
- if (lis3_dev.reg_ctrl) {
- lis3_dev.regulators[0].supply = reg_vdd;
- lis3_dev.regulators[1].supply = reg_vdd_io;
- ret = regulator_bulk_get(&client->dev,
- ARRAY_SIZE(lis3_dev.regulators),
- lis3_dev.regulators);
- if (ret < 0)
- goto fail;
- }
-
- lis3_dev.pdata = pdata;
- lis3_dev.bus_priv = client;
- lis3_dev.init = lis3_i2c_init;
- lis3_dev.read = lis3_i2c_read;
- lis3_dev.write = lis3_i2c_write;
- lis3_dev.irq = client->irq;
- lis3_dev.ac = lis3lv02d_axis_map;
- lis3_dev.pm_dev = &client->dev;
-
- i2c_set_clientdata(client, &lis3_dev);
-
- /* Provide power over the init call */
- if (lis3_dev.reg_ctrl)
- lis3_reg_ctrl(&lis3_dev, LIS3_REG_ON);
-
- ret = lis3lv02d_init_device(&lis3_dev);
-
- if (lis3_dev.reg_ctrl)
- lis3_reg_ctrl(&lis3_dev, LIS3_REG_OFF);
-
- if (ret == 0)
- return 0;
-fail:
- if (pdata && pdata->release_resources)
- pdata->release_resources();
- return ret;
-}
-
-static int __devexit lis3lv02d_i2c_remove(struct i2c_client *client)
-{
- struct lis3lv02d *lis3 = i2c_get_clientdata(client);
- struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
-
- if (pdata && pdata->release_resources)
- pdata->release_resources();
-
- lis3lv02d_joystick_disable();
- lis3lv02d_remove_fs(&lis3_dev);
-
- if (lis3_dev.reg_ctrl)
- regulator_bulk_free(ARRAY_SIZE(lis3->regulators),
- lis3_dev.regulators);
- return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int lis3lv02d_i2c_suspend(struct device *dev)
-{
- struct i2c_client *client = container_of(dev, struct i2c_client, dev);
- struct lis3lv02d *lis3 = i2c_get_clientdata(client);
-
- if (!lis3->pdata || !lis3->pdata->wakeup_flags)
- lis3lv02d_poweroff(lis3);
- return 0;
-}
-
-static int lis3lv02d_i2c_resume(struct device *dev)
-{
- struct i2c_client *client = container_of(dev, struct i2c_client, dev);
- struct lis3lv02d *lis3 = i2c_get_clientdata(client);
-
- /*
- * pm_runtime documentation says that devices should always
- * be powered on at resume. Pm_runtime turns them off after system
- * wide resume is complete.
- */
- if (!lis3->pdata || !lis3->pdata->wakeup_flags ||
- pm_runtime_suspended(dev))
- lis3lv02d_poweron(lis3);
-
- return 0;
-}
-#endif /* CONFIG_PM_SLEEP */
-
-#ifdef CONFIG_PM_RUNTIME
-static int lis3_i2c_runtime_suspend(struct device *dev)
-{
- struct i2c_client *client = container_of(dev, struct i2c_client, dev);
- struct lis3lv02d *lis3 = i2c_get_clientdata(client);
-
- lis3lv02d_poweroff(lis3);
- return 0;
-}
-
-static int lis3_i2c_runtime_resume(struct device *dev)
-{
- struct i2c_client *client = container_of(dev, struct i2c_client, dev);
- struct lis3lv02d *lis3 = i2c_get_clientdata(client);
-
- lis3lv02d_poweron(lis3);
- return 0;
-}
-#endif /* CONFIG_PM_RUNTIME */
-
-static const struct i2c_device_id lis3lv02d_id[] = {
- {"lis3lv02d", 0 },
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, lis3lv02d_id);
-
-static const struct dev_pm_ops lis3_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(lis3lv02d_i2c_suspend,
- lis3lv02d_i2c_resume)
- SET_RUNTIME_PM_OPS(lis3_i2c_runtime_suspend,
- lis3_i2c_runtime_resume,
- NULL)
-};
-
-static struct i2c_driver lis3lv02d_i2c_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- .pm = &lis3_pm_ops,
- },
- .probe = lis3lv02d_i2c_probe,
- .remove = __devexit_p(lis3lv02d_i2c_remove),
- .id_table = lis3lv02d_id,
-};
-
-static int __init lis3lv02d_init(void)
-{
- return i2c_add_driver(&lis3lv02d_i2c_driver);
-}
-
-static void __exit lis3lv02d_exit(void)
-{
- i2c_del_driver(&lis3lv02d_i2c_driver);
-}
-
-MODULE_AUTHOR("Nokia Corporation");
-MODULE_DESCRIPTION("lis3lv02d I2C interface");
-MODULE_LICENSE("GPL");
-
-module_init(lis3lv02d_init);
-module_exit(lis3lv02d_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 04:15:46 +0000