On Mon, 9 Jan 2012 21:17:17 +0800, Wu Fengguang wrote: > +#define IBX_AUD_CONFIG_A 0xe2000 > +#define CPT_AUD_CONFIG_A 0xe5000 These register addresses match the docs. > + I915_WRITE(aud_config, 1 << 29); /* N value index, 0x1 = DP */ Please don't use constants here, instead add #defines for all of the bits in this new register, in case someone else needs to use the register later. Do we also need to program the pixel clock values in this register? -- keith.packard@intel.com