target/linux/ixp4xx/patches-2.6.25/012-rtc_x1205_new_style.patch

   1 ---
   2  drivers/rtc/rtc-x1205.c |  128 ++++++++++++++++--------------------------------
   3  1 file changed, 43 insertions(+), 85 deletions(-)
   4
   5 Index: linux-2.6.25.1/drivers/rtc/rtc-x1205.c
   6 ===================================================================
   7 --- linux-2.6.25.1.orig/drivers/rtc/rtc-x1205.c
   8 +++ linux-2.6.25.1/drivers/rtc/rtc-x1205.c
   9 @@ -22,20 +22,7 @@
  10  #include <linux/rtc.h>
  11  #include <linux/delay.h>
  12
  13 -#define DRV_VERSION "1.0.7"
  14 -
  15 -/* Addresses to scan: none. This chip is located at
  16 - * 0x6f and uses a two bytes register addressing.
  17 - * Two bytes need to be written to read a single register,
  18 - * while most other chips just require one and take the second
  19 - * one as the data to be written. To prevent corrupting
  20 - * unknown chips, the user must explicitly set the probe parameter.
  21 - */
  22 -
  23 -static const unsigned short normal_i2c[] = { I2C_CLIENT_END };
  24 -
  25 -/* Insmod parameters */
  26 -I2C_CLIENT_INSMOD;
  27 +#define DRV_VERSION "1.0.8"
  28
  29  /* offsets into CCR area */
  30
  31 @@ -91,19 +78,7 @@ I2C_CLIENT_INSMOD;
  32
  33  #define X1205_HR_MIL           0x80    /* Set in ccr.hour for 24 hr mode */
  34
  35 -/* Prototypes */
  36 -static int x1205_attach(struct i2c_adapter *adapter);
  37 -static int x1205_detach(struct i2c_client *client);
  38 -static int x1205_probe(struct i2c_adapter *adapter, int address, int kind);
  39 -
  40 -static struct i2c_driver x1205_driver = {
  41 -       .driver         = {
  42 -               .name   = "x1205",
  43 -       },
  44 -       .id             = I2C_DRIVERID_X1205,
  45 -       .attach_adapter = &x1205_attach,
  46 -       .detach_client  = &x1205_detach,
  47 -};
  48 +static struct i2c_driver x1205_driver;
  49
  50  /*
  51   * In the routines that deal directly with the x1205 hardware, we use
  52 @@ -497,58 +472,51 @@ static ssize_t x1205_sysfs_show_dtrim(st
  53  }
  54  static DEVICE_ATTR(dtrim, S_IRUGO, x1205_sysfs_show_dtrim, NULL);
  55
  56 -static int x1205_attach(struct i2c_adapter *adapter)
  57 +static int x1205_sysfs_register(struct device *dev)
  58 +{
  59 +       int err;
  60 +
  61 +       err = device_create_file(dev, &dev_attr_atrim);
  62 +       if (err)
  63 +               return err;
  64 +
  65 +       err = device_create_file(dev, &dev_attr_dtrim);
  66 +       if (err)
  67 +               device_remove_file(dev, &dev_attr_atrim);
  68 +
  69 +       return err;
  70 +}
  71 +
  72 +static void x1205_sysfs_unregister(struct device *dev)
  73  {
  74 -       return i2c_probe(adapter, &addr_data, x1205_probe);
  75 +       device_remove_file(dev, &dev_attr_atrim);
  76 +       device_remove_file(dev, &dev_attr_dtrim);
  77  }
  78
  79 -static int x1205_probe(struct i2c_adapter *adapter, int address, int kind)
  80 +
  81 +static int x1205_probe(struct i2c_client *client)
  82  {
  83         int err = 0;
  84         unsigned char sr;
  85 -       struct i2c_client *client;
  86         struct rtc_device *rtc;
  87
  88 -       dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
  89 +       dev_dbg(&client->dev, "%s\n", __FUNCTION__);
  90
  91 -       if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
  92 -               err = -ENODEV;
  93 -               goto exit;
  94 +       if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
  95 +               return -ENODEV;
  96         }
  97
  98 -       if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
  99 -               err = -ENOMEM;
 100 -               goto exit;
 101 +       if (x1205_validate_client(client) < 0) {
 102 +               return -ENODEV;
 103         }
 104
 105 -       /* I2C client */
 106 -       client->addr = address;
 107 -       client->driver = &x1205_driver;
 108 -       client->adapter = adapter;
 109 -
 110 -       strlcpy(client->name, x1205_driver.driver.name, I2C_NAME_SIZE);
 111 -
 112 -       /* Verify the chip is really an X1205 */
 113 -       if (kind < 0) {
 114 -               if (x1205_validate_client(client) < 0) {
 115 -                       err = -ENODEV;
 116 -                       goto exit_kfree;
 117 -               }
 118 -       }
 119 -
 120 -       /* Inform the i2c layer */
 121 -       if ((err = i2c_attach_client(client)))
 122 -               goto exit_kfree;
 123 -
 124         dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
 125
 126         rtc = rtc_device_register(x1205_driver.driver.name, &client->dev,
 127                                 &x1205_rtc_ops, THIS_MODULE);
 128
 129 -       if (IS_ERR(rtc)) {
 130 -               err = PTR_ERR(rtc);
 131 -               goto exit_detach;
 132 -       }
 133 +       if (IS_ERR(rtc))
 134 +               return PTR_ERR(rtc);
 135
 136         i2c_set_clientdata(client, rtc);
 137
 138 @@ -565,45 +533,35 @@ static int x1205_probe(struct i2c_adapte
 139         else
 140                 dev_err(&client->dev, "couldn't read status\n");
 141
 142 -       err = device_create_file(&client->dev, &dev_attr_atrim);
 143 -       if (err) goto exit_devreg;
 144 -       err = device_create_file(&client->dev, &dev_attr_dtrim);
 145 -       if (err) goto exit_atrim;
 146 +       err = x1205_sysfs_register(&client->dev);
 147 +       if (err)
 148 +               goto exit_devreg;
 149
 150         return 0;
 151
 152 -exit_atrim:
 153 -       device_remove_file(&client->dev, &dev_attr_atrim);
 154 -
 155  exit_devreg:
 156         rtc_device_unregister(rtc);
 157
 158 -exit_detach:
 159 -       i2c_detach_client(client);
 160 -
 161 -exit_kfree:
 162 -       kfree(client);
 163 -
 164 -exit:
 165         return err;
 166  }
 167
 168 -static int x1205_detach(struct i2c_client *client)
 169 +static int x1205_remove(struct i2c_client *client)
 170  {
 171 -       int err;
 172         struct rtc_device *rtc = i2c_get_clientdata(client);
 173
 174 -       if (rtc)
 175 -               rtc_device_unregister(rtc);
 176 -
 177 -       if ((err = i2c_detach_client(client)))
 178 -               return err;
 179 -
 180 -       kfree(client);
 181 -
 182 +       rtc_device_unregister(rtc);
 183 +       x1205_sysfs_unregister(&client->dev);
 184         return 0;
 185  }
 186
 187 +static struct i2c_driver x1205_driver = {
 188 +       .driver         = {
 189 +               .name   = "rtc-x1205",
 190 +       },
 191 +       .probe          = x1205_probe,
 192 +       .remove         = x1205_remove,
 193 +};
 194 +
 195  static int __init x1205_init(void)
 196  {
 197         return i2c_add_driver(&x1205_driver);