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>

8 files changed, 90 insertions, 110 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)
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 104dcfd5d9a8..fa2d2f8b3f4d 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -41,6 +41,12 @@
 #define DS1374_REG_SR_AF        0x01 /* Alarm Flag */
 #define DS1374_REG_TCR          0x09 /* Trickle Charge */
 
+static const struct i2c_device_id ds1374_id[] = {
+        { "rtc-ds1374", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, ds1374_id);
+
 struct ds1374 {
         struct i2c_client *client;
         struct rtc_device *rtc;
@@ -430,6 +436,7 @@ static struct i2c_driver ds1374_driver = {
         },
         .probe = ds1374_probe,
         .remove = __devexit_p(ds1374_remove),
+        .id_table = ds1374_id,
 };
 
 static int __init ds1374_init(void)
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index d75d8faeead0..fbb90b1e4098 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -545,12 +545,19 @@ isl1208_remove(struct i2c_client *client)
         return 0;
 }
 
+static const struct i2c_device_id isl1208_id[] = {
+        { "isl1208", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, isl1208_id);
+
 static struct i2c_driver isl1208_driver = {
         .driver = {
                    .name = "rtc-isl1208",
                    },
         .probe = isl1208_probe,
         .remove = isl1208_remove,
+        .id_table = isl1208_id,
 };
 
 static int __init
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 2ee0d070095a..316bfaa80872 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -60,48 +60,21 @@
 
 #define DRV_VERSION "0.05"
 
-struct m41t80_chip_info {
-        const char *name;
-        u8 features;
-};
-
-static const struct m41t80_chip_info m41t80_chip_info_tbl[] = {
-        {
-                .name           = "m41t80",
-                .features       = 0,
-        },
-        {
-                .name           = "m41t81",
-                .features       = M41T80_FEATURE_HT,
-        },
-        {
-                .name           = "m41t81s",
-                .features       = M41T80_FEATURE_HT | M41T80_FEATURE_BL,
-        },
-        {
-                .name           = "m41t82",
-                .features       = M41T80_FEATURE_HT | M41T80_FEATURE_BL,
-        },
-        {
-                .name           = "m41t83",
-                .features       = M41T80_FEATURE_HT | M41T80_FEATURE_BL,
-        },
-        {
-                .name           = "m41st84",
-                .features       = M41T80_FEATURE_HT | M41T80_FEATURE_BL,
-        },
-        {
-                .name           = "m41st85",
-                .features       = M41T80_FEATURE_HT | M41T80_FEATURE_BL,
-        },
-        {
-                .name           = "m41st87",
-                .features       = M41T80_FEATURE_HT | M41T80_FEATURE_BL,
-        },
+static const struct i2c_device_id m41t80_id[] = {
+        { "m41t80", 0 },
+        { "m41t81", M41T80_FEATURE_HT },
+        { "m41t81s", M41T80_FEATURE_HT | M41T80_FEATURE_BL },
+        { "m41t82", M41T80_FEATURE_HT | M41T80_FEATURE_BL },
+        { "m41t83", M41T80_FEATURE_HT | M41T80_FEATURE_BL },
+        { "m41st84", M41T80_FEATURE_HT | M41T80_FEATURE_BL },
+        { "m41st85", M41T80_FEATURE_HT | M41T80_FEATURE_BL },
+        { "m41st87", M41T80_FEATURE_HT | M41T80_FEATURE_BL },
+        { }
 };
+MODULE_DEVICE_TABLE(i2c, m41t80_id);
 
 struct m41t80_data {
-        const struct m41t80_chip_info *chip;
+        u8 features;
         struct rtc_device *rtc;
 };
 
@@ -208,7 +181,7 @@ static int m41t80_rtc_proc(struct device *dev, struct seq_file *seq)
         struct m41t80_data *clientdata = i2c_get_clientdata(client);
         u8 reg;
 
-        if (clientdata->chip->features & M41T80_FEATURE_BL) {
+        if (clientdata->features & M41T80_FEATURE_BL) {
                 reg = i2c_smbus_read_byte_data(client, M41T80_REG_FLAGS);
                 seq_printf(seq, "battery\t\t: %s\n",
                            (reg & M41T80_FLAGS_BATT_LOW) ? "exhausted" : "ok");
@@ -759,10 +732,9 @@ static struct notifier_block wdt_notifier = {
 static int m41t80_probe(struct i2c_client *client,
                         const struct i2c_device_id *id)
 {
-        int i, rc = 0;
+        int rc = 0;
         struct rtc_device *rtc = NULL;
         struct rtc_time tm;
-        const struct m41t80_chip_info *chip;
         struct m41t80_data *clientdata = NULL;
 
         if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C
@@ -774,19 +746,6 @@ static int m41t80_probe(struct i2c_client *client,
         dev_info(&client->dev,
                  "chip found, driver version " DRV_VERSION "\n");
 
-        chip = NULL;
-        for (i = 0; i < ARRAY_SIZE(m41t80_chip_info_tbl); i++) {
-                if (!strcmp(m41t80_chip_info_tbl[i].name, client->name)) {
-                        chip = &m41t80_chip_info_tbl[i];
-                        break;
-                }
-        }
-        if (!chip) {
-                dev_err(&client->dev, "%s is not supported\n", client->name);
-                rc = -ENODEV;
-                goto exit;
-        }
-
         clientdata = kzalloc(sizeof(*clientdata), GFP_KERNEL);
         if (!clientdata) {
                 rc = -ENOMEM;
@@ -802,7 +761,7 @@ static int m41t80_probe(struct i2c_client *client,
         }
 
         clientdata->rtc = rtc;
-        clientdata->chip = chip;
+        clientdata->features = id->driver_data;
         i2c_set_clientdata(client, clientdata);
 
         /* Make sure HT (Halt Update) bit is cleared */
@@ -811,7 +770,7 @@ static int m41t80_probe(struct i2c_client *client,
                 goto ht_err;
 
         if (rc & M41T80_ALHOUR_HT) {
-                if (chip->features & M41T80_FEATURE_HT) {
+                if (clientdata->features & M41T80_FEATURE_HT) {
                         m41t80_get_datetime(client, &tm);
                         dev_info(&client->dev, "HT bit was set!\n");
                         dev_info(&client->dev,
@@ -843,7 +802,7 @@ static int m41t80_probe(struct i2c_client *client,
                 goto exit;
 
 #ifdef CONFIG_RTC_DRV_M41T80_WDT
-        if (chip->features & M41T80_FEATURE_HT) {
+        if (clientdata->features & M41T80_FEATURE_HT) {
                 rc = misc_register(&wdt_dev);
                 if (rc)
                         goto exit;
@@ -879,7 +838,7 @@ static int m41t80_remove(struct i2c_client *client)
         struct rtc_device *rtc = clientdata->rtc;
 
 #ifdef CONFIG_RTC_DRV_M41T80_WDT
-        if (clientdata->chip->features & M41T80_FEATURE_HT) {
+        if (clientdata->features & M41T80_FEATURE_HT) {
                 misc_deregister(&wdt_dev);
                 unregister_reboot_notifier(&wdt_notifier);
         }
@@ -897,6 +856,7 @@ static struct i2c_driver m41t80_driver = {
         },
         .probe = m41t80_probe,
         .remove = m41t80_remove,
+        .id_table = m41t80_id,
 };
 
 static int __init m41t80_rtc_init(void)
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 7b3c31db0fc0..0fc4c3630780 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -300,12 +300,19 @@ static int pcf8563_remove(struct i2c_client *client)
         return 0;
 }
 
+static const struct i2c_device_id pcf8563_id[] = {
+        { "pcf8563", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, pcf8563_id);
+
 static struct i2c_driver pcf8563_driver = {
         .driver         = {
                 .name   = "rtc-pcf8563",
         },
         .probe          = pcf8563_probe,
         .remove         = pcf8563_remove,
+        .id_table       = pcf8563_id,
 };
 
 static int __init pcf8563_init(void)
diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c
index 47db289bb0a3..56caf6b2c3e5 100644
--- a/drivers/rtc/rtc-rs5c372.c
+++ b/drivers/rtc/rtc-rs5c372.c
@@ -69,6 +69,15 @@ enum rtc_type {
         rtc_rv5c387a,
 };
 
+static const struct i2c_device_id rs5c372_id[] = {
+        { "rs5c372a", rtc_rs5c372a },
+        { "rs5c372b", rtc_rs5c372b },
+        { "rv5c386", rtc_rv5c386 },
+        { "rv5c387a", rtc_rv5c387a },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, rs5c372_id);
+
 /* REVISIT:  this assumes that:
  *  - we're in the 21st century, so it's safe to ignore the century
  *    bit for rv5c38[67] (REG_MONTH bit 7);
@@ -515,6 +524,7 @@ static int rs5c372_probe(struct i2c_client *client,
 
         rs5c372->client = client;
         i2c_set_clientdata(client, rs5c372);
+        rs5c372->type = id->driver_data;
 
         /* we read registers 0x0f then 0x00-0x0f; skip the first one */
         rs5c372->regs = &rs5c372->buf[1];
@@ -523,19 +533,6 @@ static int rs5c372_probe(struct i2c_client *client,
         if (err < 0)
                 goto exit_kfree;
 
-        if (strcmp(client->name, "rs5c372a") == 0)
-                rs5c372->type = rtc_rs5c372a;
-        else if (strcmp(client->name, "rs5c372b") == 0)
-                rs5c372->type = rtc_rs5c372b;
-        else if (strcmp(client->name, "rv5c386") == 0)
-                rs5c372->type = rtc_rv5c386;
-        else if (strcmp(client->name, "rv5c387a") == 0)
-                rs5c372->type = rtc_rv5c387a;
-        else {
-                rs5c372->type = rtc_rs5c372b;
-                dev_warn(&client->dev, "assuming rs5c372b\n");
-        }
-
         /* clock may be set for am/pm or 24 hr time */
         switch (rs5c372->type) {
         case rtc_rs5c372a:
@@ -652,6 +649,7 @@ static struct i2c_driver rs5c372_driver = {
         },
         .probe          = rs5c372_probe,
         .remove         = rs5c372_remove,
+        .id_table       = rs5c372_id,
 };
 
 static __init int rs5c372_init(void)
diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c
index ab0c6d221404..29f47bacfc77 100644
--- a/drivers/rtc/rtc-s35390a.c
+++ b/drivers/rtc/rtc-s35390a.c
@@ -34,6 +34,12 @@
 #define S35390A_FLAG_RESET      0x80
 #define S35390A_FLAG_TEST       0x01
 
+static const struct i2c_device_id s35390a_id[] = {
+        { "s35390a", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, s35390a_id);
+
 struct s35390a {
         struct i2c_client *client[8];
         struct rtc_device *rtc;
@@ -297,6 +303,7 @@ static struct i2c_driver s35390a_driver = {
         },
         .probe          = s35390a_probe,
         .remove         = s35390a_remove,
+        .id_table       = s35390a_id,
 };
 
 static int __init s35390a_rtc_init(void)
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index b792ad4dcaa9..eaf55945f21b 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -553,12 +553,19 @@ static int x1205_remove(struct i2c_client *client)
         return 0;
 }
 
+static const struct i2c_device_id x1205_id[] = {
+        { "x1205", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, x1205_id);
+
 static struct i2c_driver x1205_driver = {
         .driver         = {
                 .name   = "rtc-x1205",
         },
         .probe          = x1205_probe,
         .remove         = x1205_remove,
+        .id_table       = x1205_id,
 };
 
 static int __init x1205_init(void)