SPCS1             731 include/sound/emu10k1.h #define SPCS1			0x55		/* SPDIF output Channel Status 1 register	*/
SPCS1             238 sound/pci/ca0106/ca0106.h #define SPCS1			0x42		/* SPDIF output Channel Status 1 register. For Front */
SPCS1             146 sound/pci/emu10k1/emu10k1x.c #define SPCS1			0x43		/* SPDIF output Channel Status 1 register	*/