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 67ba8ae..bbf97e6 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 104dcfd..fa2d2f8 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 d75d8fa..fbb90b1 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 2ee0d07..316bfaa 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 7b3c31d..0fc4c36 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 47db289..56caf6b 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 ab0c6d2..29f47ba 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 b792ad4..eaf5594 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)