The driver writes the descriptor into the SMI registers, triggers the transfer, and waits for the completion interrupt. Errors such as address misalignment or length overflow generate -EINVAL .
Notable for integrating USB 2.0 High Speed support, which was a major upgrade over its predecessor, the S3C2440. Sec S3c2443x Test B D Driver
/* 1. Acquire memory region */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); testbd->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(testbd->base)) return PTR_ERR(testbd->base); The driver writes the descriptor into the SMI
The driver is structured in three layers: triggers the transfer
