From: Guenter Roeck <linux@roeck-us.net> To: Hardware Monitoring <linux-hwmon@vger.kernel.org> Cc: Jean Delvare <jdelvare@suse.de>, Guenter Roeck <linux@roeck-us.net> Subject: [PATCH 2/4] hwmon: (lm75) Drop lm75_read_value and lm75_write_value Date: Thu, 23 Jun 2016 17:49:59 -0700 [thread overview] Message-ID: <1466729401-27567-2-git-send-email-linux@roeck-us.net> (raw) In-Reply-To: <1466729401-27567-1-git-send-email-linux@roeck-us.net> lm75_read_value and lm75_write_value don't really add any value. Replace with direct smbus access functions. Signed-off-by: Guenter Roeck <linux@roeck-us.net> --- drivers/hwmon/lm75.c | 42 +++++++++--------------------------------- 1 file changed, 9 insertions(+), 33 deletions(-) diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c index 0df745501a1f..7b18cbd4a5ec 100644 --- a/drivers/hwmon/lm75.c +++ b/drivers/hwmon/lm75.c @@ -89,8 +89,6 @@ struct lm75_data { 2 = hyst */ }; -static int lm75_read_value(struct i2c_client *client, u8 reg); -static int lm75_write_value(struct i2c_client *client, u8 reg, u16 value); static struct lm75_data *lm75_update_device(struct device *dev); @@ -156,7 +154,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da, temp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX); data->temp[nr] = DIV_ROUND_CLOSEST(temp << (resolution - 8), 1000) << (16 - resolution); - lm75_write_value(client, LM75_REG_TEMP[nr], data->temp[nr]); + i2c_smbus_write_word_swapped(client, LM75_REG_TEMP[nr], data->temp[nr]); mutex_unlock(&data->update_lock); return count; } @@ -296,7 +294,7 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id) } /* configure as specified */ - status = lm75_read_value(client, LM75_REG_CONF); + status = i2c_smbus_read_byte_data(client, LM75_REG_CONF); if (status < 0) { dev_dbg(dev, "Can't read config? %d\n", status); return status; @@ -305,7 +303,7 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id) new = status & ~clr_mask; new |= set_mask; if (status != new) - lm75_write_value(client, LM75_REG_CONF, new); + i2c_smbus_write_byte_data(client, LM75_REG_CONF, new); devm_add_action(dev, lm75_remove, data); @@ -450,13 +448,13 @@ static int lm75_suspend(struct device *dev) { int status; struct i2c_client *client = to_i2c_client(dev); - status = lm75_read_value(client, LM75_REG_CONF); + status = i2c_smbus_read_byte_data(client, LM75_REG_CONF); if (status < 0) { dev_dbg(&client->dev, "Can't read config? %d\n", status); return status; } status = status | LM75_SHUTDOWN; - lm75_write_value(client, LM75_REG_CONF, status); + i2c_smbus_write_byte_data(client, LM75_REG_CONF, status); return 0; } @@ -464,13 +462,13 @@ static int lm75_resume(struct device *dev) { int status; struct i2c_client *client = to_i2c_client(dev); - status = lm75_read_value(client, LM75_REG_CONF); + status = i2c_smbus_read_byte_data(client, LM75_REG_CONF); if (status < 0) { dev_dbg(&client->dev, "Can't read config? %d\n", status); return status; } status = status & ~LM75_SHUTDOWN; - lm75_write_value(client, LM75_REG_CONF, status); + i2c_smbus_write_byte_data(client, LM75_REG_CONF, status); return 0; } @@ -497,29 +495,6 @@ static struct i2c_driver lm75_driver = { /*-----------------------------------------------------------------------*/ -/* register access */ - -/* - * All registers are word-sized, except for the configuration register. - * LM75 uses a high-byte first convention, which is exactly opposite to - * the SMBus standard. - */ -static int lm75_read_value(struct i2c_client *client, u8 reg) -{ - if (reg == LM75_REG_CONF) - return i2c_smbus_read_byte_data(client, reg); - else - return i2c_smbus_read_word_swapped(client, reg); -} - -static int lm75_write_value(struct i2c_client *client, u8 reg, u16 value) -{ - if (reg == LM75_REG_CONF) - return i2c_smbus_write_byte_data(client, reg, value); - else - return i2c_smbus_write_word_swapped(client, reg, value); -} - static struct lm75_data *lm75_update_device(struct device *dev) { struct lm75_data *data = dev_get_drvdata(dev); @@ -536,7 +511,8 @@ static struct lm75_data *lm75_update_device(struct device *dev) for (i = 0; i < ARRAY_SIZE(data->temp); i++) { int status; - status = lm75_read_value(client, LM75_REG_TEMP[i]); + status = i2c_smbus_read_word_swapped(client, + LM75_REG_TEMP[i]); if (unlikely(status < 0)) { dev_dbg(dev, "LM75: Failed to read value: reg %d, error %d\n", -- 2.5.0
next prev parent reply other threads:[~2016-06-24 0:49 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-06-24 0:49 [PATCH 1/4] hwmon: (lm75) Handle cleanup with devm_add_action Guenter Roeck 2016-06-24 0:49 ` Guenter Roeck [this message] 2016-06-24 0:50 ` [PATCH 3/4] hwmon: (lm75) Add update_interval attribute Guenter Roeck 2016-06-24 0:50 ` [PATCH 4/4] hwmon: (lm75) Convert to use regmap Guenter Roeck
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