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rtc-ds1672 new style driver
New style conversion and reformatting as per indent --linux-style Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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6fd5c03f82
commit
1716b0fea3
1 changed files with 34 additions and 80 deletions
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@ -9,17 +9,10 @@
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/rtc.h>
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#define DRV_VERSION "0.3"
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/* Addresses to scan: none. This chip cannot be detected. */
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static const unsigned short normal_i2c[] = { I2C_CLIENT_END };
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/* Insmod parameters */
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I2C_CLIENT_INSMOD;
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#define DRV_VERSION "0.4"
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/* Registers */
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@ -29,8 +22,7 @@ I2C_CLIENT_INSMOD;
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#define DS1672_REG_CONTROL_EOSC 0x80
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/* Prototypes */
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static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind);
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static struct i2c_driver ds1672_driver;
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/*
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* In the routines that deal directly with the ds1672 hardware, we use
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@ -44,8 +36,8 @@ static int ds1672_get_datetime(struct i2c_client *client, struct rtc_time *tm)
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unsigned char buf[4];
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struct i2c_msg msgs[] = {
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{ client->addr, 0, 1, &addr }, /* setup read ptr */
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{ client->addr, I2C_M_RD, 4, buf }, /* read date */
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{client->addr, 0, 1, &addr}, /* setup read ptr */
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{client->addr, I2C_M_RD, 4, buf}, /* read date */
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};
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/* read date registers */
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@ -80,7 +72,7 @@ static int ds1672_set_mmss(struct i2c_client *client, unsigned long secs)
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buf[2] = (secs & 0x0000FF00) >> 8;
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buf[3] = (secs & 0x00FF0000) >> 16;
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buf[4] = (secs & 0xFF000000) >> 24;
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buf[5] = 0; /* set control reg to enable counting */
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buf[5] = 0; /* set control reg to enable counting */
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xfer = i2c_master_send(client, buf, 6);
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if (xfer != 6) {
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@ -127,8 +119,8 @@ static int ds1672_get_control(struct i2c_client *client, u8 *status)
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unsigned char addr = DS1672_REG_CONTROL;
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struct i2c_msg msgs[] = {
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{ client->addr, 0, 1, &addr }, /* setup read ptr */
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{ client->addr, I2C_M_RD, 1, status }, /* read control */
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{client->addr, 0, 1, &addr}, /* setup read ptr */
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{client->addr, I2C_M_RD, 1, status}, /* read control */
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};
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/* read control register */
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@ -141,7 +133,8 @@ static int ds1672_get_control(struct i2c_client *client, u8 *status)
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}
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/* following are the sysfs callback functions */
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static ssize_t show_control(struct device *dev, struct device_attribute *attr, char *buf)
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static ssize_t show_control(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct i2c_client *client = to_i2c_client(dev);
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u8 control;
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@ -152,85 +145,46 @@ static ssize_t show_control(struct device *dev, struct device_attribute *attr, c
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return err;
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return sprintf(buf, "%s\n", (control & DS1672_REG_CONTROL_EOSC)
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? "disabled" : "enabled");
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? "disabled" : "enabled");
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}
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static DEVICE_ATTR(control, S_IRUGO, show_control, NULL);
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static const struct rtc_class_ops ds1672_rtc_ops = {
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.read_time = ds1672_rtc_read_time,
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.set_time = ds1672_rtc_set_time,
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.set_mmss = ds1672_rtc_set_mmss,
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.read_time = ds1672_rtc_read_time,
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.set_time = ds1672_rtc_set_time,
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.set_mmss = ds1672_rtc_set_mmss,
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};
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static int ds1672_attach(struct i2c_adapter *adapter)
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static int ds1672_remove(struct i2c_client *client)
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{
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return i2c_probe(adapter, &addr_data, ds1672_probe);
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}
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static int ds1672_detach(struct i2c_client *client)
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{
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int err;
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struct rtc_device *rtc = i2c_get_clientdata(client);
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if (rtc)
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if (rtc)
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rtc_device_unregister(rtc);
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if ((err = i2c_detach_client(client)))
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return err;
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kfree(client);
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return 0;
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}
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static struct i2c_driver ds1672_driver = {
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.driver = {
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.name = "ds1672",
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},
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.id = I2C_DRIVERID_DS1672,
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.attach_adapter = &ds1672_attach,
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.detach_client = &ds1672_detach,
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};
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static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind)
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static int ds1672_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int err = 0;
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u8 control;
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struct i2c_client *client;
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struct rtc_device *rtc;
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dev_dbg(&adapter->dev, "%s\n", __func__);
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dev_dbg(&client->dev, "%s\n", __func__);
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if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
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err = -ENODEV;
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goto exit;
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}
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if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
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err = -ENOMEM;
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goto exit;
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}
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/* I2C client */
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client->addr = address;
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client->driver = &ds1672_driver;
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client->adapter = adapter;
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strlcpy(client->name, ds1672_driver.driver.name, I2C_NAME_SIZE);
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/* Inform the i2c layer */
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if ((err = i2c_attach_client(client)))
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goto exit_kfree;
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
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return -ENODEV;
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dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
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rtc = rtc_device_register(ds1672_driver.driver.name, &client->dev,
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&ds1672_rtc_ops, THIS_MODULE);
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&ds1672_rtc_ops, THIS_MODULE);
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if (IS_ERR(rtc)) {
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err = PTR_ERR(rtc);
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goto exit_detach;
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}
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if (IS_ERR(rtc))
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return PTR_ERR(rtc);
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i2c_set_clientdata(client, rtc);
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@ -241,7 +195,7 @@ static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind)
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if (control & DS1672_REG_CONTROL_EOSC)
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dev_warn(&client->dev, "Oscillator not enabled. "
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"Set time to enable.\n");
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"Set time to enable.\n");
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/* Register sysfs hooks */
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err = device_create_file(&client->dev, &dev_attr_control);
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@ -250,19 +204,19 @@ static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind)
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return 0;
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exit_devreg:
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exit_devreg:
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rtc_device_unregister(rtc);
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exit_detach:
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i2c_detach_client(client);
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exit_kfree:
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kfree(client);
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exit:
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return err;
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}
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static struct i2c_driver ds1672_driver = {
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.driver = {
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.name = "rtc-ds1672",
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},
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.probe = &ds1672_probe,
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.remove = &ds1672_remove,
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};
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static int __init ds1672_init(void)
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{
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return i2c_add_driver(&ds1672_driver);
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