I have a Thecus N5550 NAS, on which I run CentOS 6.4. I have created a "board info" module which sets up the system's GPIOs and LEDs.
https://github.com/ipilcher/n5550/blob/master/modules/n5550_board.c Some of the LEDs are driven by a couple of NXP PCA9532 dimmers, which are connected to the i801 SMBus. I am currently hardcoding the bus number, which is fragile. If the drivers are loaded in a different order, as they are on Debian, the bus gets a different number, and the module doesn't work. #define N5550_PCA9532_I2C_BUS 5 static int __init n5550_pca9532_setup(void) { struct i2c_adapter *adapter; adapter = i2c_get_adapter(N5550_PCA9532_I2C_BUS); if (adapter == NULL) { return -ENOMEM; } n5550_pca9532_0_client = i2c_new_device(adapter, &n5550_pca9532_0_info); if (n5550_pca9532_0_client == NULL) { i2c_put_adapter(adapter); return -ENOMEM; } n5550_pca9532_1_client = i2c_new_device(adapter, &n5550_pca9532_1_info); if (n5550_pca9532_1_client == NULL) { i2c_unregister_device(n5550_pca9532_0_client); i2c_put_adapter(adapter); return -ENOMEM; } i2c_put_adapter(adapter); return 0; } What is the best way to get the correct i2c_adapter, either by driver name or PCI address? Thanks! -- ======================================================================== Ian Pilcher [email protected] Sent from the cloud -- where it's already tomorrow ======================================================================== -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
