3  * hwmon-vid.c - VID/VRM/VRD voltage conversions
23  * For VRM 8.4 to 9.1, "VRM x.y DC-DC Converter Design Guidelines",
32  * This corresponds to an arbitrary VRM code of 24 in the functions below.
40  * This corresponds to an arbitrary VRM code of 25 in the functions below.
59  * The 110 (VRM 11) specification corresponds to Intel Conroe based series.
64  * vrm is the VRM/VRD document version multiplied by 10.
69 int vid_from_reg(int val, u8 vrm)  in vid_from_reg()  argument
73 	switch (vrm) {  in vid_from_reg()
111 	case 91:		/* VRM 9.1 */  in vid_from_reg()
112 	case 90:		/* VRM 9.0 */  in vid_from_reg()
117 	case 85:		/* VRM 8.5 */  in vid_from_reg()
123 	case 84:		/* VRM 8.4 */  in vid_from_reg()
126 	case 82:		/* VRM 8.2 */  in vid_from_reg()
139 		if (vrm == 131 && val == 0x3f)  in vid_from_reg()
147 		if (vrm)  in vid_from_reg()
148 			pr_warn("Requested unsupported VRM version (%u)\n",  in vid_from_reg()
149 				(unsigned int)vrm);  in vid_from_reg()
157  * VRM/VRD specification should be used depending on the CPU.
184 	 * thus use vrm 25, however in practice not all mainboards route the
186 	 * variant (vrm 24) for the models which exist today.
287 		pr_info("Unknown VRM version of your x86 CPU\n");  in vid_which_vrm()
295 	pr_info("Unknown VRM version of your CPU\n");  in vid_which_vrm()