i2c: Convert most new-style drivers to use module aliasing

Based on earlier work by Jon Smirl and Jochen Friedrich.

Update most new-style i2c drivers to use standard module aliasing
instead of the old driver_name/type driver matching scheme. I've
left the video drivers apart (except for SoC camera drivers) as
they're a bit more diffcult to deal with, they'll have their own
patch later.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jon Smirl <jonsmirl@gmail.com>
Cc: Jochen Friedrich <jochen@scram.de>

1 files changed, 25 insertions, 38 deletions

diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 67ba8ae3217c..bbf97e65202a 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -99,45 +99,38 @@ struct ds1307 {
 };
 
 struct chip_desc {
-        char                    name[9];
         unsigned                nvram56:1;
         unsigned                alarm:1;
-        enum ds_type            type;
 };
 
-static const struct chip_desc chips[] = { {
-        .name           = "ds1307",
-        .type           = ds_1307,
+static const struct chip_desc chips[] = {
+[ds_1307] = {
         .nvram56        = 1,
-}, {
-        .name           = "ds1337",
-        .type           = ds_1337,
+},
+[ds_1337] = {
         .alarm          = 1,
-}, {
-        .name           = "ds1338",
-        .type           = ds_1338,
+},
+[ds_1338] = {
         .nvram56        = 1,
-}, {
-        .name           = "ds1339",
-        .type           = ds_1339,
+},
+[ds_1339] = {
         .alarm          = 1,
-}, {
-        .name           = "ds1340",
-        .type           = ds_1340,
-}, {
-        .name           = "m41t00",
-        .type           = m41t00,
+},
+[ds_1340] = {
+},
+[m41t00] = {
 }, };
 
-static inline const struct chip_desc *find_chip(const char *s)
-{
-        unsigned i;
-
-        for (i = 0; i < ARRAY_SIZE(chips); i++)
-                if (strnicmp(s, chips[i].name, sizeof chips[i].name) == 0)
-                        return &chips[i];
-        return NULL;
-}
+static const struct i2c_device_id ds1307_id[] = {
+        { "ds1307", ds_1307 },
+        { "ds1337", ds_1337 },
+        { "ds1338", ds_1338 },
+        { "ds1339", ds_1339 },
+        { "ds1340", ds_1340 },
+        { "m41t00", m41t00 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, ds1307_id);
 
 static int ds1307_get_time(struct device *dev, struct rtc_time *t)
 {
@@ -332,16 +325,9 @@ static int __devinit ds1307_probe(struct i2c_client *client,
         struct ds1307           *ds1307;
         int                     err = -ENODEV;
         int                     tmp;
-        const struct chip_desc  *chip;
+        const struct chip_desc  *chip = &chips[id->driver_data];
         struct i2c_adapter      *adapter = to_i2c_adapter(client->dev.parent);
 
-        chip = find_chip(client->name);
-        if (!chip) {
-                dev_err(&client->dev, "unknown chip type '%s'\n",
-                                client->name);
-                return -ENODEV;
-        }
-
         if (!i2c_check_functionality(adapter,
                         I2C_FUNC_I2C | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
                 return -EIO;
@@ -362,7 +348,7 @@ static int __devinit ds1307_probe(struct i2c_client *client,
         ds1307->msg[1].len = sizeof(ds1307->regs);
         ds1307->msg[1].buf = ds1307->regs;
 
-        ds1307->type = chip->type;
+        ds1307->type = id->driver_data;
 
         switch (ds1307->type) {
         case ds_1337:
@@ -551,6 +537,7 @@ static struct i2c_driver ds1307_driver = {
         },
         .probe          = ds1307_probe,
         .remove         = __devexit_p(ds1307_remove),
+        .id_table       = ds1307_id,
 };
 
 static int __init ds1307_init(void)