mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-08 17:18:05 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
424
drivers/hwmon/lm95241.c
Normal file
424
drivers/hwmon/lm95241.c
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@ -0,0 +1,424 @@
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/*
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* Copyright (C) 2008, 2010 Davide Rizzo <elpa.rizzo@gmail.com>
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*
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* The LM95241 is a sensor chip made by National Semiconductors.
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* It reports up to three temperatures (its own plus up to two external ones).
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* Complete datasheet can be obtained from National's website at:
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* http://www.national.com/ds.cgi/LM/LM95241.pdf
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/i2c.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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#include <linux/sysfs.h>
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#define DEVNAME "lm95241"
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static const unsigned short normal_i2c[] = {
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0x19, 0x2a, 0x2b, I2C_CLIENT_END };
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/* LM95241 registers */
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#define LM95241_REG_R_MAN_ID 0xFE
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#define LM95241_REG_R_CHIP_ID 0xFF
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#define LM95241_REG_R_STATUS 0x02
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#define LM95241_REG_RW_CONFIG 0x03
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#define LM95241_REG_RW_REM_FILTER 0x06
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#define LM95241_REG_RW_TRUTHERM 0x07
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#define LM95241_REG_W_ONE_SHOT 0x0F
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#define LM95241_REG_R_LOCAL_TEMPH 0x10
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#define LM95241_REG_R_REMOTE1_TEMPH 0x11
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#define LM95241_REG_R_REMOTE2_TEMPH 0x12
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#define LM95241_REG_R_LOCAL_TEMPL 0x20
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#define LM95241_REG_R_REMOTE1_TEMPL 0x21
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#define LM95241_REG_R_REMOTE2_TEMPL 0x22
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#define LM95241_REG_RW_REMOTE_MODEL 0x30
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/* LM95241 specific bitfields */
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#define CFG_STOP 0x40
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#define CFG_CR0076 0x00
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#define CFG_CR0182 0x10
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#define CFG_CR1000 0x20
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#define CFG_CR2700 0x30
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#define R1MS_SHIFT 0
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#define R2MS_SHIFT 2
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#define R1MS_MASK (0x01 << (R1MS_SHIFT))
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#define R2MS_MASK (0x01 << (R2MS_SHIFT))
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#define R1DF_SHIFT 1
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#define R2DF_SHIFT 2
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#define R1DF_MASK (0x01 << (R1DF_SHIFT))
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#define R2DF_MASK (0x01 << (R2DF_SHIFT))
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#define R1FE_MASK 0x01
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#define R2FE_MASK 0x05
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#define TT1_SHIFT 0
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#define TT2_SHIFT 4
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#define TT_OFF 0
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#define TT_ON 1
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#define TT_MASK 7
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#define NATSEMI_MAN_ID 0x01
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#define LM95231_CHIP_ID 0xA1
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#define LM95241_CHIP_ID 0xA4
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static const u8 lm95241_reg_address[] = {
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LM95241_REG_R_LOCAL_TEMPH,
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LM95241_REG_R_LOCAL_TEMPL,
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LM95241_REG_R_REMOTE1_TEMPH,
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LM95241_REG_R_REMOTE1_TEMPL,
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LM95241_REG_R_REMOTE2_TEMPH,
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LM95241_REG_R_REMOTE2_TEMPL
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};
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/* Client data (each client gets its own) */
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struct lm95241_data {
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struct i2c_client *client;
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struct mutex update_lock;
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unsigned long last_updated, interval; /* in jiffies */
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char valid; /* zero until following fields are valid */
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/* registers values */
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u8 temp[ARRAY_SIZE(lm95241_reg_address)];
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u8 config, model, trutherm;
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};
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/* Conversions */
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static int temp_from_reg_signed(u8 val_h, u8 val_l)
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{
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s16 val_hl = (val_h << 8) | val_l;
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return val_hl * 1000 / 256;
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}
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static int temp_from_reg_unsigned(u8 val_h, u8 val_l)
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{
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u16 val_hl = (val_h << 8) | val_l;
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return val_hl * 1000 / 256;
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}
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static struct lm95241_data *lm95241_update_device(struct device *dev)
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{
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struct lm95241_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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mutex_lock(&data->update_lock);
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if (time_after(jiffies, data->last_updated + data->interval) ||
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!data->valid) {
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int i;
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dev_dbg(dev, "Updating lm95241 data.\n");
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for (i = 0; i < ARRAY_SIZE(lm95241_reg_address); i++)
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data->temp[i]
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= i2c_smbus_read_byte_data(client,
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lm95241_reg_address[i]);
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data->last_updated = jiffies;
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data->valid = 1;
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}
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mutex_unlock(&data->update_lock);
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return data;
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}
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/* Sysfs stuff */
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static ssize_t show_input(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct lm95241_data *data = lm95241_update_device(dev);
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int index = to_sensor_dev_attr(attr)->index;
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return snprintf(buf, PAGE_SIZE - 1, "%d\n",
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index == 0 || (data->config & (1 << (index / 2))) ?
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temp_from_reg_signed(data->temp[index], data->temp[index + 1]) :
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temp_from_reg_unsigned(data->temp[index],
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data->temp[index + 1]));
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}
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static ssize_t show_type(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct lm95241_data *data = dev_get_drvdata(dev);
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return snprintf(buf, PAGE_SIZE - 1,
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data->model & to_sensor_dev_attr(attr)->index ? "1\n" : "2\n");
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}
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static ssize_t set_type(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct lm95241_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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unsigned long val;
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int shift;
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u8 mask = to_sensor_dev_attr(attr)->index;
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if (kstrtoul(buf, 10, &val) < 0)
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return -EINVAL;
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if (val != 1 && val != 2)
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return -EINVAL;
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shift = mask == R1MS_MASK ? TT1_SHIFT : TT2_SHIFT;
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mutex_lock(&data->update_lock);
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data->trutherm &= ~(TT_MASK << shift);
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if (val == 1) {
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data->model |= mask;
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data->trutherm |= (TT_ON << shift);
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} else {
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data->model &= ~mask;
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data->trutherm |= (TT_OFF << shift);
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}
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data->valid = 0;
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i2c_smbus_write_byte_data(client, LM95241_REG_RW_REMOTE_MODEL,
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data->model);
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i2c_smbus_write_byte_data(client, LM95241_REG_RW_TRUTHERM,
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data->trutherm);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t show_min(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct lm95241_data *data = dev_get_drvdata(dev);
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return snprintf(buf, PAGE_SIZE - 1,
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data->config & to_sensor_dev_attr(attr)->index ?
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"-127000\n" : "0\n");
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}
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static ssize_t set_min(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct lm95241_data *data = dev_get_drvdata(dev);
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long val;
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if (kstrtol(buf, 10, &val) < 0)
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return -EINVAL;
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if (val < -128000)
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return -EINVAL;
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mutex_lock(&data->update_lock);
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if (val < 0)
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data->config |= to_sensor_dev_attr(attr)->index;
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else
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data->config &= ~to_sensor_dev_attr(attr)->index;
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data->valid = 0;
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i2c_smbus_write_byte_data(data->client, LM95241_REG_RW_CONFIG,
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data->config);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t show_max(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct lm95241_data *data = dev_get_drvdata(dev);
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return snprintf(buf, PAGE_SIZE - 1,
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data->config & to_sensor_dev_attr(attr)->index ?
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"127000\n" : "255000\n");
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}
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static ssize_t set_max(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct lm95241_data *data = dev_get_drvdata(dev);
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long val;
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if (kstrtol(buf, 10, &val) < 0)
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return -EINVAL;
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if (val >= 256000)
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return -EINVAL;
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mutex_lock(&data->update_lock);
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if (val <= 127000)
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data->config |= to_sensor_dev_attr(attr)->index;
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else
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data->config &= ~to_sensor_dev_attr(attr)->index;
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data->valid = 0;
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i2c_smbus_write_byte_data(data->client, LM95241_REG_RW_CONFIG,
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data->config);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t show_interval(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct lm95241_data *data = lm95241_update_device(dev);
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return snprintf(buf, PAGE_SIZE - 1, "%lu\n", 1000 * data->interval
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/ HZ);
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}
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static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct lm95241_data *data = dev_get_drvdata(dev);
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unsigned long val;
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if (kstrtoul(buf, 10, &val) < 0)
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return -EINVAL;
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data->interval = val * HZ / 1000;
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return count;
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}
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static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_input, NULL, 0);
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static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_input, NULL, 2);
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static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_input, NULL, 4);
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static SENSOR_DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, set_type,
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R1MS_MASK);
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static SENSOR_DEVICE_ATTR(temp3_type, S_IWUSR | S_IRUGO, show_type, set_type,
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R2MS_MASK);
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static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_min, set_min,
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R1DF_MASK);
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static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_min, set_min,
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R2DF_MASK);
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static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_max, set_max,
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R1DF_MASK);
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static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_max, set_max,
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R2DF_MASK);
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static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval,
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set_interval);
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static struct attribute *lm95241_attrs[] = {
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&sensor_dev_attr_temp1_input.dev_attr.attr,
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&sensor_dev_attr_temp2_input.dev_attr.attr,
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&sensor_dev_attr_temp3_input.dev_attr.attr,
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&sensor_dev_attr_temp2_type.dev_attr.attr,
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&sensor_dev_attr_temp3_type.dev_attr.attr,
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&sensor_dev_attr_temp2_min.dev_attr.attr,
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&sensor_dev_attr_temp3_min.dev_attr.attr,
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&sensor_dev_attr_temp2_max.dev_attr.attr,
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&sensor_dev_attr_temp3_max.dev_attr.attr,
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&dev_attr_update_interval.attr,
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NULL
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};
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ATTRIBUTE_GROUPS(lm95241);
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/* Return 0 if detection is successful, -ENODEV otherwise */
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static int lm95241_detect(struct i2c_client *new_client,
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struct i2c_board_info *info)
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{
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struct i2c_adapter *adapter = new_client->adapter;
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const char *name;
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int mfg_id, chip_id;
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return -ENODEV;
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mfg_id = i2c_smbus_read_byte_data(new_client, LM95241_REG_R_MAN_ID);
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if (mfg_id != NATSEMI_MAN_ID)
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return -ENODEV;
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chip_id = i2c_smbus_read_byte_data(new_client, LM95241_REG_R_CHIP_ID);
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switch (chip_id) {
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case LM95231_CHIP_ID:
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name = "lm95231";
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break;
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case LM95241_CHIP_ID:
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name = "lm95241";
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break;
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default:
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return -ENODEV;
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}
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/* Fill the i2c board info */
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strlcpy(info->type, name, I2C_NAME_SIZE);
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return 0;
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}
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static void lm95241_init_client(struct i2c_client *client,
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struct lm95241_data *data)
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{
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data->interval = HZ; /* 1 sec default */
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data->config = CFG_CR0076;
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data->trutherm = (TT_OFF << TT1_SHIFT) | (TT_OFF << TT2_SHIFT);
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i2c_smbus_write_byte_data(client, LM95241_REG_RW_CONFIG, data->config);
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i2c_smbus_write_byte_data(client, LM95241_REG_RW_REM_FILTER,
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R1FE_MASK | R2FE_MASK);
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i2c_smbus_write_byte_data(client, LM95241_REG_RW_TRUTHERM,
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data->trutherm);
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i2c_smbus_write_byte_data(client, LM95241_REG_RW_REMOTE_MODEL,
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data->model);
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}
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static int lm95241_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct device *dev = &client->dev;
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struct lm95241_data *data;
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struct device *hwmon_dev;
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data = devm_kzalloc(dev, sizeof(struct lm95241_data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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data->client = client;
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mutex_init(&data->update_lock);
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/* Initialize the LM95241 chip */
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lm95241_init_client(client, data);
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hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
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data,
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lm95241_groups);
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return PTR_ERR_OR_ZERO(hwmon_dev);
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}
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/* Driver data (common to all clients) */
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static const struct i2c_device_id lm95241_id[] = {
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{ "lm95231", 0 },
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{ "lm95241", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, lm95241_id);
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static struct i2c_driver lm95241_driver = {
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.class = I2C_CLASS_HWMON,
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.driver = {
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.name = DEVNAME,
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},
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.probe = lm95241_probe,
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.id_table = lm95241_id,
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.detect = lm95241_detect,
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.address_list = normal_i2c,
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};
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module_i2c_driver(lm95241_driver);
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MODULE_AUTHOR("Davide Rizzo <elpa.rizzo@gmail.com>");
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MODULE_DESCRIPTION("LM95241 sensor driver");
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MODULE_LICENSE("GPL");
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