From 3886246a257e828248ce1e72ced00408a3557f0d Mon Sep 17 00:00:00 2001
From: Sebastian Witt <se.witt@gmx.net>
Date: Wed, 13 Apr 2005 22:25:39 +0200
Subject: [PATCH] [PATCH] I2C: i2c-vid.h: Support for VID to reg conversion
Adds conversion from VID (mV) to register value. Used by the atxp1 I2C module.
Removed uneeded switch case.
Signed-off-by: Sebastian Witt <se.witt@gmx.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
include/linux/i2c-vid.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/linux/i2c-vid.h b/include/linux/i2c-vid.h
index 974835e3530f4..41d0635e0ba94 100644
--- a/include/linux/i2c-vid.h
+++ b/include/linux/i2c-vid.h
@@ -97,3 +97,15 @@ static inline int vid_from_reg(int val, int vrm)
2050 - (val) * 50);
}
}
+
+static inline int vid_to_reg(int val, int vrm)
+{
+ switch (vrm) {
+ case 91: /* VRM 9.1 */
+ case 90: /* VRM 9.0 */
+ return ((val >= 1100) && (val <= 1850) ?
+ ((18499 - val * 10) / 25 + 5) / 10 : -1);
+ default:
+ return -1;
+ }
+}
--
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