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author | Grant Coady <grant_lkml@dodo.com.au> | 2005-09-17 05:32:55 +1000 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-10-28 14:02:05 -0700 |
commit | 205cf13e0b57500e2cc6442effa991c1a63f4db7 (patch) | |
tree | 8519455083b045e270e0513646a76d351567b3bb | |
parent | 84860bf0644d7c45afe7ddbd30731c3e3c371fae (diff) | |
download | kernel_samsung_smdk4412-205cf13e0b57500e2cc6442effa991c1a63f4db7.zip kernel_samsung_smdk4412-205cf13e0b57500e2cc6442effa991c1a63f4db7.tar.gz kernel_samsung_smdk4412-205cf13e0b57500e2cc6442effa991c1a63f4db7.tar.bz2 |
[PATCH] hwmon: adm9240 driver update - cleanups
hwmon: adm9240 update 1/2: cleanups:
o remove i2c read/write wrapper interface as it does nothing,
o change kmalloc + memset to kzalloc
Signed-off-by: Grant Coady <gcoady@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r-- | drivers/hwmon/adm9240.c | 92 |
1 files changed, 44 insertions, 48 deletions
diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c index bc7faef..ecef342 100644 --- a/drivers/hwmon/adm9240.c +++ b/drivers/hwmon/adm9240.c @@ -170,17 +170,6 @@ struct adm9240_data { u8 vrm; /* -- vrm set on startup, no accessor */ }; -/* i2c byte read/write interface */ -static int adm9240_read_value(struct i2c_client *client, u8 reg) -{ - return i2c_smbus_read_byte_data(client, reg); -} - -static int adm9240_write_value(struct i2c_client *client, u8 reg, u8 value) -{ - return i2c_smbus_write_byte_data(client, reg, value); -} - /*** sysfs accessors ***/ /* temperature */ @@ -207,7 +196,7 @@ static ssize_t set_##value(struct device *dev, \ \ down(&data->update_lock); \ data->value = TEMP_TO_REG(temp); \ - adm9240_write_value(client, reg, data->value); \ + i2c_smbus_write_byte_data(client, reg, data->value); \ up(&data->update_lock); \ return count; \ } @@ -249,7 +238,8 @@ static ssize_t set_in_min(struct device *dev, const char *buf, down(&data->update_lock); data->in_min[nr] = IN_TO_REG(val, nr); - adm9240_write_value(client, ADM9240_REG_IN_MIN(nr), data->in_min[nr]); + i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(nr), + data->in_min[nr]); up(&data->update_lock); return count; } @@ -263,7 +253,8 @@ static ssize_t set_in_max(struct device *dev, const char *buf, down(&data->update_lock); data->in_max[nr] = IN_TO_REG(val, nr); - adm9240_write_value(client, ADM9240_REG_IN_MAX(nr), data->in_max[nr]); + i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(nr), + data->in_max[nr]); up(&data->update_lock); return count; } @@ -341,11 +332,11 @@ static void adm9240_write_fan_div(struct i2c_client *client, int nr, { u8 reg, old, shift = (nr + 2) * 2; - reg = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV); + reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV); old = (reg >> shift) & 3; reg &= ~(3 << shift); reg |= (fan_div << shift); - adm9240_write_value(client, ADM9240_REG_VID_FAN_DIV, reg); + i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg); dev_dbg(&client->dev, "fan%d clock divider changed from %u " "to %u\n", nr + 1, 1 << old, 1 << fan_div); } @@ -406,7 +397,7 @@ static ssize_t set_fan_min(struct device *dev, const char *buf, data->fan_div[nr] = new_div; adm9240_write_fan_div(client, nr, new_div); } - adm9240_write_value(client, ADM9240_REG_FAN_MIN(nr), + i2c_smbus_write_byte_data(client, ADM9240_REG_FAN_MIN(nr), data->fan_min[nr]); up(&data->update_lock); @@ -479,7 +470,7 @@ static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const down(&data->update_lock); data->aout = AOUT_TO_REG(val); - adm9240_write_value(client, ADM9240_REG_ANALOG_OUT, data->aout); + i2c_smbus_write_byte_data(client, ADM9240_REG_ANALOG_OUT, data->aout); up(&data->update_lock); return count; } @@ -492,7 +483,8 @@ static ssize_t chassis_clear(struct device *dev, struct device_attribute *attr, unsigned long val = simple_strtol(buf, NULL, 10); if (val == 1) { - adm9240_write_value(client, ADM9240_REG_CHASSIS_CLEAR, 0x80); + i2c_smbus_write_byte_data(client, + ADM9240_REG_CHASSIS_CLEAR, 0x80); dev_dbg(&client->dev, "chassis intrusion latch cleared\n"); } return count; @@ -513,11 +505,10 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct adm9240_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct adm9240_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); @@ -533,7 +524,7 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) if (kind < 0) { /* verify chip: reg address should match i2c address */ - if (adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR) + if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR) != address) { dev_err(&adapter->dev, "detect fail: address match, " "0x%02x\n", address); @@ -541,8 +532,8 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) } /* check known chip manufacturer */ - man_id = adm9240_read_value(new_client, ADM9240_REG_MAN_ID); - + man_id = i2c_smbus_read_byte_data(new_client, + ADM9240_REG_MAN_ID); if (man_id == 0x23) { kind = adm9240; } else if (man_id == 0xda) { @@ -556,7 +547,8 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) } /* successful detect, print chip info */ - die_rev = adm9240_read_value(new_client, ADM9240_REG_DIE_REV); + die_rev = i2c_smbus_read_byte_data(new_client, + ADM9240_REG_DIE_REV); dev_info(&adapter->dev, "found %s revision %u\n", man_id == 0x23 ? "ADM9240" : man_id == 0xda ? "DS1780" : "LM81", die_rev); @@ -654,8 +646,8 @@ static int adm9240_detach_client(struct i2c_client *client) static void adm9240_init_client(struct i2c_client *client) { struct adm9240_data *data = i2c_get_clientdata(client); - u8 conf = adm9240_read_value(client, ADM9240_REG_CONFIG); - u8 mode = adm9240_read_value(client, ADM9240_REG_TEMP_CONF) & 3; + u8 conf = i2c_smbus_read_byte_data(client, ADM9240_REG_CONFIG); + u8 mode = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF) & 3; data->vrm = vid_which_vrm(); /* need this to report vid as mV */ @@ -672,18 +664,22 @@ static void adm9240_init_client(struct i2c_client *client) for (i = 0; i < 6; i++) { - adm9240_write_value(client, + i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(i), 0); - adm9240_write_value(client, + i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(i), 255); } - adm9240_write_value(client, ADM9240_REG_FAN_MIN(0), 255); - adm9240_write_value(client, ADM9240_REG_FAN_MIN(1), 255); - adm9240_write_value(client, ADM9240_REG_TEMP_HIGH, 127); - adm9240_write_value(client, ADM9240_REG_TEMP_HYST, 127); + i2c_smbus_write_byte_data(client, + ADM9240_REG_FAN_MIN(0), 255); + i2c_smbus_write_byte_data(client, + ADM9240_REG_FAN_MIN(1), 255); + i2c_smbus_write_byte_data(client, + ADM9240_REG_TEMP_HIGH, 127); + i2c_smbus_write_byte_data(client, + ADM9240_REG_TEMP_HYST, 127); /* start measurement cycle */ - adm9240_write_value(client, ADM9240_REG_CONFIG, 1); + i2c_smbus_write_byte_data(client, ADM9240_REG_CONFIG, 1); dev_info(&client->dev, "cold start: config was 0x%02x " "mode %u\n", conf, mode); @@ -704,25 +700,25 @@ static struct adm9240_data *adm9240_update_device(struct device *dev) for (i = 0; i < 6; i++) /* read voltages */ { - data->in[i] = adm9240_read_value(client, + data->in[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_IN(i)); } - data->alarms = adm9240_read_value(client, + data->alarms = i2c_smbus_read_byte_data(client, ADM9240_REG_INT(0)) | - adm9240_read_value(client, + i2c_smbus_read_byte_data(client, ADM9240_REG_INT(1)) << 8; /* read temperature: assume temperature changes less than * 0.5'C per two measurement cycles thus ignore possible * but unlikely aliasing error on lsb reading. --Grant */ - data->temp = ((adm9240_read_value(client, + data->temp = ((i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP) << 8) | - adm9240_read_value(client, + i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF)) / 128; for (i = 0; i < 2; i++) /* read fans */ { - data->fan[i] = adm9240_read_value(client, + data->fan[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_FAN(i)); /* adjust fan clock divider on overflow */ @@ -747,30 +743,30 @@ static struct adm9240_data *adm9240_update_device(struct device *dev) for (i = 0; i < 6; i++) { - data->in_min[i] = adm9240_read_value(client, + data->in_min[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_IN_MIN(i)); - data->in_max[i] = adm9240_read_value(client, + data->in_max[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_IN_MAX(i)); } for (i = 0; i < 2; i++) { - data->fan_min[i] = adm9240_read_value(client, + data->fan_min[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_FAN_MIN(i)); } - data->temp_high = adm9240_read_value(client, + data->temp_high = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_HIGH); - data->temp_hyst = adm9240_read_value(client, + data->temp_hyst = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_HYST); /* read fan divs and 5-bit VID */ - i = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV); + i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV); data->fan_div[0] = (i >> 4) & 3; data->fan_div[1] = (i >> 6) & 3; data->vid = i & 0x0f; - data->vid |= (adm9240_read_value(client, + data->vid |= (i2c_smbus_read_byte_data(client, ADM9240_REG_VID4) & 1) << 4; /* read analog out */ - data->aout = adm9240_read_value(client, + data->aout = i2c_smbus_read_byte_data(client, ADM9240_REG_ANALOG_OUT); data->last_updated_config = jiffies; |