diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/hwmon/pmbus/zl6100.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/hwmon/pmbus/zl6100.c | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/ANDROID_3.4.5/drivers/hwmon/pmbus/zl6100.c b/ANDROID_3.4.5/drivers/hwmon/pmbus/zl6100.c deleted file mode 100644 index fc5eed8e..00000000 --- a/ANDROID_3.4.5/drivers/hwmon/pmbus/zl6100.c +++ /dev/null @@ -1,259 +0,0 @@ -/* - * Hardware monitoring driver for ZL6100 and compatibles - * - * Copyright (c) 2011 Ericsson AB. - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/err.h> -#include <linux/slab.h> -#include <linux/i2c.h> -#include <linux/ktime.h> -#include <linux/delay.h> -#include "pmbus.h" - -enum chips { zl2004, zl2005, zl2006, zl2008, zl2105, zl2106, zl6100, zl6105, - zl9101, zl9117 }; - -struct zl6100_data { - int id; - ktime_t access; /* chip access time */ - int delay; /* Delay between chip accesses in uS */ - struct pmbus_driver_info info; -}; - -#define to_zl6100_data(x) container_of(x, struct zl6100_data, info) - -#define ZL6100_MFR_CONFIG 0xd0 -#define ZL6100_DEVICE_ID 0xe4 - -#define ZL6100_MFR_XTEMP_ENABLE (1 << 7) - -#define ZL6100_WAIT_TIME 1000 /* uS */ - -static ushort delay = ZL6100_WAIT_TIME; -module_param(delay, ushort, 0644); -MODULE_PARM_DESC(delay, "Delay between chip accesses in uS"); - -/* Some chips need a delay between accesses */ -static inline void zl6100_wait(const struct zl6100_data *data) -{ - if (data->delay) { - s64 delta = ktime_us_delta(ktime_get(), data->access); - if (delta < data->delay) - udelay(data->delay - delta); - } -} - -static int zl6100_read_word_data(struct i2c_client *client, int page, int reg) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct zl6100_data *data = to_zl6100_data(info); - int ret; - - if (page || reg >= PMBUS_VIRT_BASE) - return -ENXIO; - - if (data->id == zl2005) { - /* - * Limit register detection is not reliable on ZL2005. - * Make sure registers are not erroneously detected. - */ - switch (reg) { - case PMBUS_VOUT_OV_WARN_LIMIT: - case PMBUS_VOUT_UV_WARN_LIMIT: - case PMBUS_IOUT_OC_WARN_LIMIT: - return -ENXIO; - } - } - - zl6100_wait(data); - ret = pmbus_read_word_data(client, page, reg); - data->access = ktime_get(); - - return ret; -} - -static int zl6100_read_byte_data(struct i2c_client *client, int page, int reg) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct zl6100_data *data = to_zl6100_data(info); - int ret; - - if (page > 0) - return -ENXIO; - - zl6100_wait(data); - ret = pmbus_read_byte_data(client, page, reg); - data->access = ktime_get(); - - return ret; -} - -static int zl6100_write_word_data(struct i2c_client *client, int page, int reg, - u16 word) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct zl6100_data *data = to_zl6100_data(info); - int ret; - - if (page || reg >= PMBUS_VIRT_BASE) - return -ENXIO; - - zl6100_wait(data); - ret = pmbus_write_word_data(client, page, reg, word); - data->access = ktime_get(); - - return ret; -} - -static int zl6100_write_byte(struct i2c_client *client, int page, u8 value) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct zl6100_data *data = to_zl6100_data(info); - int ret; - - if (page > 0) - return -ENXIO; - - zl6100_wait(data); - ret = pmbus_write_byte(client, page, value); - data->access = ktime_get(); - - return ret; -} - -static const struct i2c_device_id zl6100_id[] = { - {"bmr450", zl2005}, - {"bmr451", zl2005}, - {"bmr462", zl2008}, - {"bmr463", zl2008}, - {"bmr464", zl2008}, - {"zl2004", zl2004}, - {"zl2005", zl2005}, - {"zl2006", zl2006}, - {"zl2008", zl2008}, - {"zl2105", zl2105}, - {"zl2106", zl2106}, - {"zl6100", zl6100}, - {"zl6105", zl6105}, - {"zl9101", zl9101}, - {"zl9117", zl9117}, - { } -}; -MODULE_DEVICE_TABLE(i2c, zl6100_id); - -static int zl6100_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - int ret; - struct zl6100_data *data; - struct pmbus_driver_info *info; - u8 device_id[I2C_SMBUS_BLOCK_MAX + 1]; - const struct i2c_device_id *mid; - - if (!i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_READ_WORD_DATA - | I2C_FUNC_SMBUS_READ_BLOCK_DATA)) - return -ENODEV; - - ret = i2c_smbus_read_block_data(client, ZL6100_DEVICE_ID, - device_id); - if (ret < 0) { - dev_err(&client->dev, "Failed to read device ID\n"); - return ret; - } - device_id[ret] = '\0'; - dev_info(&client->dev, "Device ID %s\n", device_id); - - mid = NULL; - for (mid = zl6100_id; mid->name[0]; mid++) { - if (!strncasecmp(mid->name, device_id, strlen(mid->name))) - break; - } - if (!mid->name[0]) { - dev_err(&client->dev, "Unsupported device\n"); - return -ENODEV; - } - if (id->driver_data != mid->driver_data) - dev_notice(&client->dev, - "Device mismatch: Configured %s, detected %s\n", - id->name, mid->name); - - data = devm_kzalloc(&client->dev, sizeof(struct zl6100_data), - GFP_KERNEL); - if (!data) - return -ENOMEM; - - data->id = mid->driver_data; - - /* - * According to information from the chip vendor, all currently - * supported chips are known to require a wait time between I2C - * accesses. - */ - data->delay = delay; - - /* - * Since there was a direct I2C device access above, wait before - * accessing the chip again. - */ - data->access = ktime_get(); - zl6100_wait(data); - - info = &data->info; - - info->pages = 1; - info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT - | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT - | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT - | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; - - ret = i2c_smbus_read_word_data(client, ZL6100_MFR_CONFIG); - if (ret < 0) - return ret; - - if (ret & ZL6100_MFR_XTEMP_ENABLE) - info->func[0] |= PMBUS_HAVE_TEMP2; - - data->access = ktime_get(); - zl6100_wait(data); - - info->read_word_data = zl6100_read_word_data; - info->read_byte_data = zl6100_read_byte_data; - info->write_word_data = zl6100_write_word_data; - info->write_byte = zl6100_write_byte; - - return pmbus_do_probe(client, mid, info); -} - -static struct i2c_driver zl6100_driver = { - .driver = { - .name = "zl6100", - }, - .probe = zl6100_probe, - .remove = pmbus_do_remove, - .id_table = zl6100_id, -}; - -module_i2c_driver(zl6100_driver); - -MODULE_AUTHOR("Guenter Roeck"); -MODULE_DESCRIPTION("PMBus driver for ZL6100 and compatibles"); -MODULE_LICENSE("GPL"); |