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@ -0,0 +1,227 @@
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From: Alessandro Zummo <alessandro.zummo@towertech.it>
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Date: Thu, 16 Oct 2008 05:03:10 +0000 (-0700)
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Subject: rtc-ds1672 new style driver
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X-Git-Tag: v2.6.28-rc1~429
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X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=1716b0fea36c2be628440c1050182a1a1e9caae7
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rtc-ds1672 new style driver
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New style conversion and reformatting as per indent --linux-style
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Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
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Cc: David Brownell <david-b@pacbell.net>
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Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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---
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--- a/drivers/rtc/rtc-ds1672.c
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+++ b/drivers/rtc/rtc-ds1672.c
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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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-
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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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-
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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 i2
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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_cl
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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
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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
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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 devic
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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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+
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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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-{
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- return i2c_probe(adapter, &addr_data, ds1672_probe);
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-}
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-
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-static int ds1672_detach(struct i2c_client *client)
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+static int ds1672_remove(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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-
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- kfree(client);
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-
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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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-
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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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-
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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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-
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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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+ dev_dbg(&client->dev, "%s\n", __func__);
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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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-
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- strlcpy(client->name, ds1672_driver.driver.name, I2C_NAME_SIZE);
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-
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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_adapt
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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_adapt
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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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-
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-exit_detach:
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- i2c_detach_client(client);
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-
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-exit_kfree:
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- kfree(client);
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-
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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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+
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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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Imre Kaloz