i2c: Let bus drivers add SPD to their class

Let general purpose I2C/SMBus bus drivers add SPD to their class. Once
this is done, we will be able to tell the eeprom driver to only probe
for SPD EEPROMs and similar on these buses.

Note that I took a conservative approach here, adding I2C_CLASS_SPD to
many drivers that have no idea whether they can host SPD EEPROMs or not.
This is to make sure that the eeprom driver doesn't stop probing buses
where SPD EEPROMs or equivalent live.

So, bus driver maintainers and users should feel free to remove the SPD
class from drivers those buses never have SPD EEPROMs or they don't
want the eeprom driver to bind to them. Likewise, feel free to add the
SPD class to any bus driver I might have missed.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

29 files changed, 31 insertions, 30 deletions

diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c
index 704436cdec8..8d1d90ab3a9 100644
--- a/drivers/i2c/busses/i2c-ali1535.c
+++ b/drivers/i2c/busses/i2c-ali1535.c
@@ -473,7 +473,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter ali1535_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_ALI1535,
-	.class          = I2C_CLASS_HWMON,
+	.class          = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-ali1563.c b/drivers/i2c/busses/i2c-ali1563.c
index da5a382eee9..4b55ae19db8 100644
--- a/drivers/i2c/busses/i2c-ali1563.c
+++ b/drivers/i2c/busses/i2c-ali1563.c
@@ -382,7 +382,7 @@ static const struct i2c_algorithm ali1563_algorithm = {
 static struct i2c_adapter ali1563_adapter = {
 	.owner	= THIS_MODULE,
 	.id	= I2C_HW_SMBUS_ALI1563,
-	.class	= I2C_CLASS_HWMON,
+	.class	= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo	= &ali1563_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c
index 7b029b147a8..e922c3950fc 100644
--- a/drivers/i2c/busses/i2c-ali15x3.c
+++ b/drivers/i2c/busses/i2c-ali15x3.c
@@ -471,7 +471,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter ali15x3_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_ALI15X3,
-	.class          = I2C_CLASS_HWMON,
+	.class          = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c
index f0baea62067..bd4f6380fab 100644
--- a/drivers/i2c/busses/i2c-amd756.c
+++ b/drivers/i2c/busses/i2c-amd756.c
@@ -301,7 +301,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 struct i2c_adapter amd756_smbus = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_AMD756,
-	.class          = I2C_CLASS_HWMON,
+	.class          = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c
index a4f687915de..0e18fe84601 100644
--- a/drivers/i2c/busses/i2c-amd8111.c
+++ b/drivers/i2c/busses/i2c-amd8111.c
@@ -383,7 +383,7 @@ static int __devinit amd8111_probe(struct pci_dev *dev,
 	snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),
 		"SMBus2 AMD8111 adapter at %04x", smbus->base);
 	smbus->adapter.id = I2C_HW_SMBUS_AMD8111;
-	smbus->adapter.class = I2C_CLASS_HWMON;
+	smbus->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	smbus->adapter.algo = &smbus_algorithm;
 	smbus->adapter.algo_data = smbus;
 
diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c
index 53af744a91c..8164de1f4d7 100644
--- a/drivers/i2c/busses/i2c-cpm.c
+++ b/drivers/i2c/busses/i2c-cpm.c
@@ -423,7 +423,7 @@ static const struct i2c_adapter cpm_ops = {
 	.owner		= THIS_MODULE,
 	.name		= "i2c-cpm",
 	.algo		= &cpm_i2c_algo,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 };
 
 static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm)
diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c
index b7a9977b025..c251cf21a62 100644
--- a/drivers/i2c/busses/i2c-elektor.c
+++ b/drivers/i2c/busses/i2c-elektor.c
@@ -202,7 +202,7 @@ static struct i2c_algo_pcf_data pcf_isa_data = {
 
 static struct i2c_adapter pcf_isa_ops = {
 	.owner		= THIS_MODULE,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.id		= I2C_HW_P_ELEK,
 	.algo_data	= &pcf_isa_data,
 	.name		= "i2c-elektor",
diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c
index 7c1b762aa68..79b455a1f09 100644
--- a/drivers/i2c/busses/i2c-gpio.c
+++ b/drivers/i2c/busses/i2c-gpio.c
@@ -140,7 +140,7 @@ static int __init i2c_gpio_probe(struct platform_device *pdev)
 	adap->owner = THIS_MODULE;
 	snprintf(adap->name, sizeof(adap->name), "i2c-gpio%d", pdev->id);
 	adap->algo_data = bit_data;
-	adap->class = I2C_CLASS_HWMON;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	adap->dev.parent = &pdev->dev;
 
 	/*
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 213119211e5..9717ffe1292 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -573,7 +573,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter i801_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_I801,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c
index 85dbf34382e..6f7bfdec3c6 100644
--- a/drivers/i2c/busses/i2c-ibm_iic.c
+++ b/drivers/i2c/busses/i2c-ibm_iic.c
@@ -740,7 +740,7 @@ static int __devinit iic_probe(struct ocp_device *ocp){
 	strcpy(adap->name, "IBM IIC");
 	i2c_set_adapdata(adap, dev);
 	adap->id = I2C_HW_OCP;
-	adap->class = I2C_CLASS_HWMON;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	adap->algo = &iic_algo;
 	adap->client_register = NULL;
 	adap->client_unregister = NULL;
@@ -934,7 +934,7 @@ static int __devinit iic_probe(struct of_device *ofdev,
 	strlcpy(adap->name, "IBM IIC", sizeof(adap->name));
 	i2c_set_adapdata(adap, dev);
 	adap->id = I2C_HW_OCP;
-	adap->class = I2C_CLASS_HWMON;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	adap->algo = &iic_algo;
 	adap->timeout = 1;
 	adap->nr = dev->idx;
diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index 39884e79759..fc2714ac0c0 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -482,7 +482,7 @@ iop3xx_i2c_probe(struct platform_device *pdev)
 	memcpy(new_adapter->name, pdev->name, strlen(pdev->name));
 	new_adapter->id = I2C_HW_IOP3XX;
 	new_adapter->owner = THIS_MODULE;
-	new_adapter->class = I2C_CLASS_HWMON;
+	new_adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	new_adapter->dev.parent = &pdev->dev;
 	new_adapter->nr = pdev->id;
 
diff --git a/drivers/i2c/busses/i2c-isch.c b/drivers/i2c/busses/i2c-isch.c
index c9cd46b2269..8d648911a7f 100644
--- a/drivers/i2c/busses/i2c-isch.c
+++ b/drivers/i2c/busses/i2c-isch.c
@@ -251,7 +251,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 
 static struct i2c_adapter sch_adapter = {
 	.owner		= THIS_MODULE,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index a076129de7e..10b9342a36c 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -311,7 +311,7 @@ static struct i2c_adapter mpc_ops = {
 	.name = "MPC adapter",
 	.id = I2C_HW_MPC107,
 	.algo = &mpc_algo,
-	.class = I2C_CLASS_HWMON,
+	.class = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.timeout = 1,
 };
 
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 036e6a883e6..9e8118d2fe6 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -530,7 +530,7 @@ mv64xxx_i2c_probe(struct platform_device *pd)
 	drv_data->adapter.id = I2C_HW_MV64XXX;
 	drv_data->adapter.algo = &mv64xxx_i2c_algo;
 	drv_data->adapter.owner = THIS_MODULE;
-	drv_data->adapter.class = I2C_CLASS_HWMON;
+	drv_data->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	drv_data->adapter.timeout = pdata->timeout;
 	drv_data->adapter.nr = pd->id;
 	platform_set_drvdata(pd, drv_data);
diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c
index 081fdf3393f..2654f20d3a6 100644
--- a/drivers/i2c/busses/i2c-nforce2.c
+++ b/drivers/i2c/busses/i2c-nforce2.c
@@ -350,7 +350,7 @@ static int __devinit nforce2_probe_smb (struct pci_dev *dev, int bar,
 	}
 	smbus->adapter.owner = THIS_MODULE;
 	smbus->adapter.id = I2C_HW_SMBUS_NFORCE2;
-	smbus->adapter.class = I2C_CLASS_HWMON;
+	smbus->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	smbus->adapter.algo = &smbus_algorithm;
 	smbus->adapter.algo_data = smbus;
 	smbus->adapter.dev.parent = &dev->dev;
diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
index f145692cbb7..51ca79bf648 100644
--- a/drivers/i2c/busses/i2c-ocores.c
+++ b/drivers/i2c/busses/i2c-ocores.c
@@ -205,7 +205,7 @@ static const struct i2c_algorithm ocores_algorithm = {
 static struct i2c_adapter ocores_adapter = {
 	.owner		= THIS_MODULE,
 	.name		= "i2c-ocores",
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &ocores_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c
index 1603c81e39d..adf0fbb902f 100644
--- a/drivers/i2c/busses/i2c-pasemi.c
+++ b/drivers/i2c/busses/i2c-pasemi.c
@@ -365,7 +365,7 @@ static int __devinit pasemi_smb_probe(struct pci_dev *dev,
 	smbus->adapter.owner = THIS_MODULE;
 	snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),
 		 "PA Semi SMBus adapter at 0x%lx", smbus->base);
-	smbus->adapter.class = I2C_CLASS_HWMON;
+	smbus->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	smbus->adapter.algo = &smbus_algorithm;
 	smbus->adapter.algo_data = smbus;
 	smbus->adapter.nr = PCI_FUNC(dev->devfn);
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 2bde47509e1..85d69f3e624 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -402,7 +402,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter piix4_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_PIIX4,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c
index 63b3e2c11cf..dcf2045b522 100644
--- a/drivers/i2c/busses/i2c-pmcmsp.c
+++ b/drivers/i2c/busses/i2c-pmcmsp.c
@@ -622,7 +622,7 @@ static struct i2c_algorithm pmcmsptwi_algo = {
 
 static struct i2c_adapter pmcmsptwi_adapter = {
 	.owner		= THIS_MODULE,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &pmcmsptwi_algo,
 	.name		= DRV_NAME,
 };
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 9e8c875437b..007390ad981 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -590,7 +590,7 @@ static struct s3c24xx_i2c s3c24xx_i2c = {
 		.owner			= THIS_MODULE,
 		.algo			= &s3c24xx_i2c_algorithm,
 		.retries		= 2,
-		.class			= I2C_CLASS_HWMON,
+		.class			= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	},
 };
 
diff --git a/drivers/i2c/busses/i2c-sibyte.c b/drivers/i2c/busses/i2c-sibyte.c
index 114634da6c6..ac8822e7a5b 100644
--- a/drivers/i2c/busses/i2c-sibyte.c
+++ b/drivers/i2c/busses/i2c-sibyte.c
@@ -156,7 +156,7 @@ static struct i2c_adapter sibyte_board_adapter[2] = {
 	{
 		.owner		= THIS_MODULE,
 		.id		= I2C_HW_SIBYTE,
-		.class		= I2C_CLASS_HWMON,
+		.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 		.algo		= NULL,
 		.algo_data	= &sibyte_board_data[0],
 		.name		= "SiByte SMBus 0",
@@ -164,7 +164,7 @@ static struct i2c_adapter sibyte_board_adapter[2] = {
 	{
 		.owner		= THIS_MODULE,
 		.id		= I2C_HW_SIBYTE,
-		.class		= I2C_CLASS_HWMON,
+		.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 		.algo		= NULL,
 		.algo_data	= &sibyte_board_data[1],
 		.name		= "SiByte SMBus 1",
diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c
index 328441bb547..f76944b384f 100644
--- a/drivers/i2c/busses/i2c-sis5595.c
+++ b/drivers/i2c/busses/i2c-sis5595.c
@@ -362,7 +362,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter sis5595_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_SIS5595,
-	.class          = I2C_CLASS_HWMON,
+	.class          = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c
index d7e6ff3e018..eb2b2181fed 100644
--- a/drivers/i2c/busses/i2c-sis630.c
+++ b/drivers/i2c/busses/i2c-sis630.c
@@ -462,7 +462,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter sis630_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_SIS630,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c
index cde8e588036..413e9e47772 100644
--- a/drivers/i2c/busses/i2c-sis96x.c
+++ b/drivers/i2c/busses/i2c-sis96x.c
@@ -244,7 +244,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter sis96x_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_SIS96X,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/i2c-stub.c b/drivers/i2c/busses/i2c-stub.c
index e37ccd80f77..1b7b2af9403 100644
--- a/drivers/i2c/busses/i2c-stub.c
+++ b/drivers/i2c/busses/i2c-stub.c
@@ -140,7 +140,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 
 static struct i2c_adapter stub_adapter = {
 	.owner		= THIS_MODULE,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 	.name		= "SMBus stub driver",
 };
diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c
index 61716f6b14d..6517f8a6d91 100644
--- a/drivers/i2c/busses/i2c-via.c
+++ b/drivers/i2c/busses/i2c-via.c
@@ -87,7 +87,7 @@ static struct i2c_algo_bit_data bit_data = {
 static struct i2c_adapter vt586b_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_B_VIA,
-	.class          = I2C_CLASS_HWMON,
+	.class          = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.name		= "VIA i2c",
 	.algo_data	= &bit_data,
 };
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index c611905df00..7957ce51589 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -311,7 +311,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter vt596_adapter = {
 	.owner		= THIS_MODULE,
 	.id		= I2C_HW_SMBUS_VIA2,
-	.class		= I2C_CLASS_HWMON,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.algo		= &smbus_algorithm,
 };
 
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index 61abe0f3325..ed794b145a1 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -442,7 +442,7 @@ static __init struct scx200_acb_iface *scx200_create_iface(const char *text,
 	adapter->owner = THIS_MODULE;
 	adapter->id = I2C_HW_SMBUS_SCX200;
 	adapter->algo = &scx200_acb_algorithm;
-	adapter->class = I2C_CLASS_HWMON;
+	adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
 	adapter->dev.parent = dev;
 
 	mutex_init(&iface->mutex);
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 145797fe6a3..839d0ea3dca 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -353,6 +353,7 @@ static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data)
 #define I2C_CLASS_CAM_ANALOG	(1<<4)	/* camera with analog CCD */
 #define I2C_CLASS_CAM_DIGITAL	(1<<5)	/* most webcams */
 #define I2C_CLASS_SOUND		(1<<6)	/* sound devices */
+#define I2C_CLASS_SPD		(1<<7)	/* SPD EEPROMs and similar */
 #define I2C_CLASS_ALL		(UINT_MAX) /* all of the above */
 
 /* i2c_client_address_data is the struct for holding default client