diff options
| -rw-r--r-- | drivers/hwmon/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/hwmon/adt7310.c | 88 | ||||
| -rw-r--r-- | drivers/hwmon/adt7410.c | 77 | ||||
| -rw-r--r-- | drivers/hwmon/adt7x10.c | 225 | ||||
| -rw-r--r-- | drivers/hwmon/adt7x10.h | 10 |
5 files changed, 213 insertions, 188 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 5f1506cca68f..387253ae6c14 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -174,6 +174,7 @@ config SENSORS_ADM9240 config SENSORS_ADT7X10 tristate + select REGMAP help This module contains common code shared by the ADT7310/ADT7320 and ADT7410/ADT7420 temperature monitoring chip drivers. diff --git a/drivers/hwmon/adt7310.c b/drivers/hwmon/adt7310.c index c40cac16af68..a83092470bce 100644 --- a/drivers/hwmon/adt7310.c +++ b/drivers/hwmon/adt7310.c @@ -8,6 +8,7 @@ #include <linux/module.h> #include <linux/init.h> +#include <linux/regmap.h> #include <linux/spi/spi.h> #include <asm/unaligned.h> @@ -38,16 +39,13 @@ static const u8 adt7310_reg_table[] = { #define AD7310_COMMAND(reg) (adt7310_reg_table[(reg)] << ADT7310_CMD_REG_OFFSET) -static int adt7310_spi_read_word(struct device *dev, u8 reg) +static int adt7310_spi_read_word(struct spi_device *spi, u8 reg) { - struct spi_device *spi = to_spi_device(dev); - return spi_w8r16be(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ); } -static int adt7310_spi_write_word(struct device *dev, u8 reg, u16 data) +static int adt7310_spi_write_word(struct spi_device *spi, u8 reg, u16 data) { - struct spi_device *spi = to_spi_device(dev); u8 buf[3]; buf[0] = AD7310_COMMAND(reg); @@ -56,17 +54,13 @@ static int adt7310_spi_write_word(struct device *dev, u8 reg, u16 data) return spi_write(spi, buf, sizeof(buf)); } -static int adt7310_spi_read_byte(struct device *dev, u8 reg) +static int adt7310_spi_read_byte(struct spi_device *spi, u8 reg) { - struct spi_device *spi = to_spi_device(dev); - return spi_w8r8(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ); } -static int adt7310_spi_write_byte(struct device *dev, u8 reg, - u8 data) +static int adt7310_spi_write_byte(struct spi_device *spi, u8 reg, u8 data) { - struct spi_device *spi = to_spi_device(dev); u8 buf[2]; buf[0] = AD7310_COMMAND(reg); @@ -75,17 +69,77 @@ static int adt7310_spi_write_byte(struct device *dev, u8 reg, return spi_write(spi, buf, sizeof(buf)); } -static const struct adt7x10_ops adt7310_spi_ops = { - .read_word = adt7310_spi_read_word, - .write_word = adt7310_spi_write_word, - .read_byte = adt7310_spi_read_byte, - .write_byte = adt7310_spi_write_byte, +static bool adt7310_regmap_is_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case ADT7X10_TEMPERATURE: + case ADT7X10_STATUS: + return true; + default: + return false; + } +} + +static int adt7310_reg_read(void *context, unsigned int reg, unsigned int *val) +{ + struct spi_device *spi = context; + int regval; + + switch (reg) { + case ADT7X10_TEMPERATURE: + case ADT7X10_T_ALARM_HIGH: + case ADT7X10_T_ALARM_LOW: + case ADT7X10_T_CRIT: + regval = adt7310_spi_read_word(spi, reg); + break; + default: + regval = adt7310_spi_read_byte(spi, reg); + break; + } + if (regval < 0) + return regval; + *val = regval; + return 0; +} + +static int adt7310_reg_write(void *context, unsigned int reg, unsigned int val) +{ + struct spi_device *spi = context; + int ret; + + switch (reg) { + case ADT7X10_TEMPERATURE: + case ADT7X10_T_ALARM_HIGH: + case ADT7X10_T_ALARM_LOW: + case ADT7X10_T_CRIT: + ret = adt7310_spi_write_word(spi, reg, val); + break; + default: + ret = adt7310_spi_write_byte(spi, reg, val); + break; + } + return ret; +} + +static const struct regmap_config adt7310_regmap_config = { + .reg_bits = 8, + .val_bits = 16, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = adt7310_regmap_is_volatile, + .reg_read = adt7310_reg_read, + .reg_write = adt7310_reg_write, }; static int adt7310_spi_probe(struct spi_device *spi) { + struct regmap *regmap; + + regmap = devm_regmap_init(&spi->dev, NULL, spi, &adt7310_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + return adt7x10_probe(&spi->dev, spi_get_device_id(spi)->name, spi->irq, - &adt7310_spi_ops); + regmap); } static int adt7310_spi_remove(struct spi_device *spi) diff --git a/drivers/hwmon/adt7410.c b/drivers/hwmon/adt7410.c index 973db057427b..b1f4497dca05 100644 --- a/drivers/hwmon/adt7410.c +++ b/drivers/hwmon/adt7410.c @@ -9,43 +9,82 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/i2c.h> +#include <linux/regmap.h> #include "adt7x10.h" -static int adt7410_i2c_read_word(struct device *dev, u8 reg) +static bool adt7410_regmap_is_volatile(struct device *dev, unsigned int reg) { - return i2c_smbus_read_word_swapped(to_i2c_client(dev), reg); + switch (reg) { + case ADT7X10_TEMPERATURE: + case ADT7X10_STATUS: + return true; + default: + return false; + } } -static int adt7410_i2c_write_word(struct device *dev, u8 reg, u16 data) +static int adt7410_reg_read(void *context, unsigned int reg, unsigned int *val) { - return i2c_smbus_write_word_swapped(to_i2c_client(dev), reg, data); -} + struct i2c_client *client = context; + int regval; -static int adt7410_i2c_read_byte(struct device *dev, u8 reg) -{ - return i2c_smbus_read_byte_data(to_i2c_client(dev), reg); + switch (reg) { + case ADT7X10_TEMPERATURE: + case ADT7X10_T_ALARM_HIGH: + case ADT7X10_T_ALARM_LOW: + case ADT7X10_T_CRIT: + regval = i2c_smbus_read_word_swapped(client, reg); + break; + default: + regval = i2c_smbus_read_byte_data(client, reg); + break; + } + if (regval < 0) + return regval; + *val = regval; + return 0; } -static int adt7410_i2c_write_byte(struct device *dev, u8 reg, u8 data) +static int adt7410_reg_write(void *context, unsigned int reg, unsigned int val) { - return i2c_smbus_write_byte_data(to_i2c_client(dev), reg, data); + struct i2c_client *client = context; + int ret; + + switch (reg) { + case ADT7X10_TEMPERATURE: + case ADT7X10_T_ALARM_HIGH: + case ADT7X10_T_ALARM_LOW: + case ADT7X10_T_CRIT: + ret = i2c_smbus_write_word_swapped(client, reg, val); + break; + default: + ret = i2c_smbus_write_byte_data(client, reg, val); + break; + } + return ret; } -static const struct adt7x10_ops adt7410_i2c_ops = { - .read_word = adt7410_i2c_read_word, - .write_word = adt7410_i2c_write_word, - .read_byte = adt7410_i2c_read_byte, - .write_byte = adt7410_i2c_write_byte, +static const struct regmap_config adt7410_regmap_config = { + .reg_bits = 8, + .val_bits = 16, + .max_register = ADT7X10_ID, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = adt7410_regmap_is_volatile, + .reg_read = adt7410_reg_read, + .reg_write = adt7410_reg_write, }; static int adt7410_i2c_probe(struct i2c_client *client) { - if (!i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) - return -ENODEV; + struct regmap *regmap; + + regmap = devm_regmap_init(&client->dev, NULL, client, + &adt7410_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); - return adt7x10_probe(&client->dev, NULL, client->irq, &adt7410_i2c_ops); + return adt7x10_probe(&client->dev, NULL, client->irq, regmap); } static int adt7410_i2c_remove(struct i2c_client *client) diff --git a/drivers/hwmon/adt7x10.c b/drivers/hwmon/adt7x10.c index e9d33aa78a19..05dd48b707b4 100644 --- a/drivers/hwmon/adt7x10.c +++ b/drivers/hwmon/adt7x10.c @@ -18,6 +18,7 @@ #include <linux/mutex.h> #include <linux/delay.h> #include <linux/interrupt.h> +#include <linux/regmap.h> #include "adt7x10.h" @@ -53,46 +54,15 @@ /* Each client has this additional data */ struct adt7x10_data { - const struct adt7x10_ops *ops; + struct regmap *regmap; const char *name; struct device *hwmon_dev; struct mutex update_lock; u8 config; u8 oldconfig; - bool valid; /* true if registers valid */ - unsigned long last_updated; /* In jiffies */ - s16 temp[4]; /* Register values, - 0 = input - 1 = high - 2 = low - 3 = critical */ - u8 hyst; /* hysteresis offset */ + bool valid; /* true if temperature valid */ }; -static int adt7x10_read_byte(struct device *dev, u8 reg) -{ - struct adt7x10_data *d = dev_get_drvdata(dev); - return d->ops->read_byte(dev, reg); -} - -static int adt7x10_write_byte(struct device *dev, u8 reg, u8 data) -{ - struct adt7x10_data *d = dev_get_drvdata(dev); - return d->ops->write_byte(dev, reg, data); -} - -static int adt7x10_read_word(struct device *dev, u8 reg) -{ - struct adt7x10_data *d = dev_get_drvdata(dev); - return d->ops->read_word(dev, reg); -} - -static int adt7x10_write_word(struct device *dev, u8 reg, u16 data) -{ - struct adt7x10_data *d = dev_get_drvdata(dev); - return d->ops->write_word(dev, reg, data); -} - static const u8 ADT7X10_REG_TEMP[4] = { ADT7X10_TEMPERATURE, /* input */ ADT7X10_T_ALARM_HIGH, /* high */ @@ -103,10 +73,12 @@ static const u8 ADT7X10_REG_TEMP[4] = { static irqreturn_t adt7x10_irq_handler(int irq, void *private) { struct device *dev = private; - int status; + struct adt7x10_data *d = dev_get_drvdata(dev); + unsigned int status; + int ret; - status = adt7x10_read_byte(dev, ADT7X10_STATUS); - if (status < 0) + ret = regmap_read(d->regmap, ADT7X10_STATUS, &status); + if (ret < 0) return IRQ_HANDLED; if (status & ADT7X10_STAT_T_HIGH) @@ -119,14 +91,15 @@ static irqreturn_t adt7x10_irq_handler(int irq, void *private) return IRQ_HANDLED; } -static int adt7x10_temp_ready(struct device *dev) +static int adt7x10_temp_ready(struct regmap *regmap) { - int i, status; + unsigned int status; + int i, ret; for (i = 0; i < 6; i++) { - status = adt7x10_read_byte(dev, ADT7X10_STATUS); - if (status < 0) - return status; + ret = regmap_read(regmap, ADT7X10_STATUS, &status); + if (ret < 0) + return ret; if (!(status & ADT7X10_STAT_NOT_RDY)) return 0; msleep(60); @@ -134,71 +107,10 @@ static int adt7x10_temp_ready(struct device *dev) return -ETIMEDOUT; } -static int adt7x10_update_temp(struct device *dev) -{ - struct adt7x10_data *data = dev_get_drvdata(dev); - int ret = 0; - - mutex_lock(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ + HZ / 2) - || !data->valid) { - int temp; - - dev_dbg(dev, "Starting update\n"); - - ret = adt7x10_temp_ready(dev); /* check for new value */ - if (ret) - goto abort; - - temp = adt7x10_read_word(dev, ADT7X10_REG_TEMP[0]); - if (temp < 0) { - ret = temp; - dev_dbg(dev, "Failed to read value: reg %d, error %d\n", - ADT7X10_REG_TEMP[0], ret); - goto abort; - } - data->temp[0] = temp; - data->last_updated = jiffies; - data->valid = true; - } - -abort: - mutex_unlock(&data->update_lock); - return ret; -} - -static int adt7x10_fill_cache(struct device *dev) -{ - struct adt7x10_data *data = dev_get_drvdata(dev); - int ret; - int i; - - for (i = 1; i < ARRAY_SIZE(data->temp); i++) { - ret = adt7x10_read_word(dev, ADT7X10_REG_TEMP[i]); - if (ret < 0) { - dev_dbg(dev, "Failed to read value: reg %d, error %d\n", - ADT7X10_REG_TEMP[i], ret); - return ret; - } - data->temp[i] = ret; - } - - ret = adt7x10_read_byte(dev, ADT7X10_T_HYST); - if (ret < 0) { - dev_dbg(dev, "Failed to read value: reg %d, error %d\n", - ADT7X10_T_HYST, ret); - return ret; - } - data->hyst = ret; - - return 0; -} - static s16 ADT7X10_TEMP_TO_REG(long temp) { return DIV_ROUND_CLOSEST(clamp_val(temp, ADT7X10_TEMP_MIN, - ADT7X10_TEMP_MAX) * 128, 1000); + ADT7X10_TEMP_MAX) * 128, 1000); } static int ADT7X10_REG_TO_TEMP(struct adt7x10_data *data, s16 reg) @@ -222,18 +134,26 @@ static ssize_t adt7x10_temp_show(struct device *dev, { struct sensor_device_attribute *attr = to_sensor_dev_attr(da); struct adt7x10_data *data = dev_get_drvdata(dev); + unsigned int val; + int ret; - - if (attr->index == 0) { - int ret; - - ret = adt7x10_update_temp(dev); - if (ret) + mutex_lock(&data->update_lock); + if (attr->index == 0 && !data->valid) { + /* wait for valid temperature */ + ret = adt7x10_temp_ready(data->regmap); + if (ret) { + mutex_unlock(&data->update_lock); return ret; + } + data->valid = true; } + mutex_unlock(&data->update_lock); - return sprintf(buf, "%d\n", ADT7X10_REG_TO_TEMP(data, - data->temp[attr->index])); + ret = regmap_read(data->regmap, ADT7X10_REG_TEMP[attr->index], &val); + if (ret) + return ret; + + return sprintf(buf, "%d\n", ADT7X10_REG_TO_TEMP(data, val)); } static ssize_t adt7x10_temp_store(struct device *dev, @@ -251,12 +171,10 @@ static ssize_t adt7x10_temp_store(struct device *dev, return ret; mutex_lock(&data->update_lock); - data->temp[nr] = ADT7X10_TEMP_TO_REG(temp); - ret = adt7x10_write_word(dev, ADT7X10_REG_TEMP[nr], data->temp[nr]); - if (ret) - count = ret; + ret = regmap_write(data->regmap, ADT7X10_REG_TEMP[nr], + ADT7X10_TEMP_TO_REG(temp)); mutex_unlock(&data->update_lock); - return count; + return ret ? : count; } static ssize_t adt7x10_t_hyst_show(struct device *dev, @@ -265,9 +183,21 @@ static ssize_t adt7x10_t_hyst_show(struct device *dev, struct sensor_device_attribute *attr = to_sensor_dev_attr(da); struct adt7x10_data *data = dev_get_drvdata(dev); int nr = attr->index; - int hyst; + int hyst, temp, ret; + + mutex_lock(&data->update_lock); + ret = regmap_read(data->regmap, ADT7X10_T_HYST, &hyst); + if (ret) { + mutex_unlock(&data->update_lock); + return ret; + } + + ret = regmap_read(data->regmap, ADT7X10_REG_TEMP[nr], &temp); + mutex_unlock(&data->update_lock); + if (ret) + return ret; - hyst = (data->hyst & ADT7X10_T_HYST_MASK) * 1000; + hyst = (hyst & ADT7X10_T_HYST_MASK) * 1000; /* * hysteresis is stored as a 4 bit offset in the device, convert it @@ -275,8 +205,8 @@ static ssize_t adt7x10_t_hyst_show(struct device *dev, */ if (nr == 2) /* min has positive offset, others have negative */ hyst = -hyst; - return sprintf(buf, "%d\n", - ADT7X10_REG_TO_TEMP(data, data->temp[nr]) - hyst); + + return sprintf(buf, "%d\n", ADT7X10_REG_TO_TEMP(data, temp) - hyst); } static ssize_t adt7x10_t_hyst_store(struct device *dev, @@ -284,35 +214,45 @@ static ssize_t adt7x10_t_hyst_store(struct device *dev, const char *buf, size_t count) { struct adt7x10_data *data = dev_get_drvdata(dev); + unsigned int regval; int limit, ret; long hyst; ret = kstrtol(buf, 10, &hyst); if (ret) return ret; + + mutex_lock(&data->update_lock); + /* convert absolute hysteresis value to a 4 bit delta value */ - limit = ADT7X10_REG_TO_TEMP(data, data->temp[1]); - hyst = clamp_val(hyst, ADT7X10_TEMP_MIN, ADT7X10_TEMP_MAX); - data->hyst = clamp_val(DIV_ROUND_CLOSEST(limit - hyst, 1000), - 0, ADT7X10_T_HYST_MASK); - ret = adt7x10_write_byte(dev, ADT7X10_T_HYST, data->hyst); - if (ret) - return ret; + ret = regmap_read(data->regmap, ADT7X10_T_ALARM_HIGH, ®val); + if (ret < 0) + goto abort; - return count; + limit = ADT7X10_REG_TO_TEMP(data, regval); + + hyst = clamp_val(hyst, ADT7X10_TEMP_MIN, ADT7X10_TEMP_MAX); + regval = clamp_val(DIV_ROUND_CLOSEST(limit - hyst, 1000), 0, + ADT7X10_T_HYST_MASK); + ret = regmap_write(data->regmap, ADT7X10_T_HYST, regval); +abort: + mutex_unlock(&data->update_lock); + return ret ? : count; } static ssize_t adt7x10_alarm_show(struct device *dev, struct device_attribute *da, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct adt7x10_data *data = dev_get_drvdata(dev); + unsigned int status; int ret; - ret = adt7x10_read_byte(dev, ADT7X10_STATUS); + ret = regmap_read(data->regmap, ADT7X10_STATUS, &status); if (ret < 0) return ret; - return sprintf(buf, "%d\n", !!(ret & attr->index)); + return sprintf(buf, "%d\n", !!(status & attr->index)); } static ssize_t name_show(struct device *dev, struct device_attribute *da, @@ -357,28 +297,29 @@ static const struct attribute_group adt7x10_group = { }; int adt7x10_probe(struct device *dev, const char *name, int irq, - const struct adt7x10_ops *ops) + struct regmap *regmap) { struct adt7x10_data *data; + unsigned int config; int ret; data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; - data->ops = ops; + data->regmap = regmap; data->name = name; dev_set_drvdata(dev, data); mutex_init(&data->update_lock); /* configure as specified */ - ret = adt7x10_read_byte(dev, ADT7X10_CONFIG); + ret = regmap_read(regmap, ADT7X10_CONFIG, &config); if (ret < 0) { dev_dbg(dev, "Can't read config? %d\n", ret); return ret; } - data->oldconfig = ret; + data->oldconfig = config; /* * Set to 16 bit resolution, continous conversion and comparator mode. @@ -389,16 +330,12 @@ int adt7x10_probe(struct device *dev, const char *name, int irq, data->config |= ADT7X10_FULL | ADT7X10_RESOLUTION | ADT7X10_EVENT_MODE; if (data->config != data->oldconfig) { - ret = adt7x10_write_byte(dev, ADT7X10_CONFIG, data->config); + ret = regmap_write(regmap, ADT7X10_CONFIG, data->config); if (ret) return ret; } dev_dbg(dev, "Config %02x\n", data->config); - ret = adt7x10_fill_cache(dev); - if (ret) - goto exit_restore; - /* Register sysfs hooks */ ret = sysfs_create_group(&dev->kobj, &adt7x10_group); if (ret) @@ -439,7 +376,7 @@ exit_remove_name: exit_remove: sysfs_remove_group(&dev->kobj, &adt7x10_group); exit_restore: - adt7x10_write_byte(dev, ADT7X10_CONFIG, data->oldconfig); + regmap_write(regmap, ADT7X10_CONFIG, data->oldconfig); return ret; } EXPORT_SYMBOL_GPL(adt7x10_probe); @@ -456,7 +393,7 @@ void adt7x10_remove(struct device *dev, int irq) device_remove_file(dev, &dev_attr_name); sysfs_remove_group(&dev->kobj, &adt7x10_group); if (data->oldconfig != data->config) - adt7x10_write_byte(dev, ADT7X10_CONFIG, data->oldconfig); + regmap_write(data->regmap, ADT7X10_CONFIG, data->oldconfig); } EXPORT_SYMBOL_GPL(adt7x10_remove); @@ -466,15 +403,15 @@ static int adt7x10_suspend(struct device *dev) { struct adt7x10_data *data = dev_get_drvdata(dev); - return adt7x10_write_byte(dev, ADT7X10_CONFIG, - data->config | ADT7X10_PD); + return regmap_write(data->regmap, ADT7X10_CONFIG, + data->config | ADT7X10_PD); } static int adt7x10_resume(struct device *dev) { struct adt7x10_data *data = dev_get_drvdata(dev); - return adt7x10_write_byte(dev, ADT7X10_CONFIG, data->config); + return regmap_write(data->regmap, ADT7X10_CONFIG, data->config); } SIMPLE_DEV_PM_OPS(adt7x10_dev_pm_ops, adt7x10_suspend, adt7x10_resume); diff --git a/drivers/hwmon/adt7x10.h b/drivers/hwmon/adt7x10.h index a1ae682eb32e..55ff08bfe946 100644 --- a/drivers/hwmon/adt7x10.h +++ b/drivers/hwmon/adt7x10.h @@ -17,15 +17,9 @@ struct device; -struct adt7x10_ops { - int (*read_byte)(struct device *, u8 reg); - int (*write_byte)(struct device *, u8 reg, u8 data); - int (*read_word)(struct device *, u8 reg); - int (*write_word)(struct device *, u8 reg, u16 data); -}; - int adt7x10_probe(struct device *dev, const char *name, int irq, - const struct adt7x10_ops *ops); + struct regmap *regmap); + void adt7x10_remove(struct device *dev, int irq); #ifdef CONFIG_PM_SLEEP |