lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

i2c-ocores: Can add I2C devices to the bus

Browse Source 
There is sometimes a need for the ocores driver to add devices to the
bus when installed.

i2c_register_board_info can not always be used, because the I2C devices
 are not known at an early state, they could for instance be connected
 on a I2C bus on a PCI device which has the Open Cores IP.

i2c_new_device can not be used in all cases either since the resulting
bus nummer might be unknown.

The solution is the pass a list of I2C devices in the platform data to
the Open Cores driver. This is useful for MFD drivers.

Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Richard Röjfors
2009-06-05 15:40:32 +02:00
committed by Ben Dooks
parent 7d85ccd816
commit dd14be4c27
3 changed files with 24 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/i2c/busses/i2c-ocores.c
View File

@@ -216,6 +216,7 @@ static int __devinit ocores_i2c_probe(struct platform_device *pdev)
struct ocores_i2c_platform_data *pdata;
struct resource *res, *res2;
int ret;
int i;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
@@ -271,6 +272,10 @@ static int __devinit ocores_i2c_probe(struct platform_device *pdev)
goto add_adapter_failed;
}
/* add in known devices to the bus */
for (i = 0; i < pdata->num_devices; i++)
i2c_new_device(&i2c->adap, pdata->devices + i);
return 0;
add_adapter_failed: