I have an ASOC v1 driver that I'm wrapping up. I've noticed something weird in my hw_params() function. I have this code:

size_t buffer_size = params_buffer_size(hw_params); size_t period_size = params_period_bytes(hw_params);

printk(KERN_INFO "%s: buffer_size=%x period_size=%x\n", __FUNCTION__, buffer_size, period_size); printk(KERN_INFO "%s: params_periods=%u\n", __FUNCTION__, params_periods(hw_params));

And it produces this output:

fsl_dma_hw_params: buffer_size=5dc0 period_size=5dc0 fsl_dma_hw_params: params_periods=4

Why am I getting the same value for buffer_size and period_size? buffer_size should be four times period_size.