From c3450239c78a4ef6c10da13dfc18831f43dbe0c5 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 9 Jun 2011 13:45:31 +1000
Subject: [PATCH] drm/nouveau/pm: store voltage in microvolts

Instead of 10s of millivolts, to match fermi vbios.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
 drivers/gpu/drm/nouveau/nouveau_drv.h  |  8 ++++----
 drivers/gpu/drm/nouveau/nouveau_perf.c | 11 ++++++-----
 drivers/gpu/drm/nouveau/nouveau_pm.c   |  2 +-
 drivers/gpu/drm/nouveau/nouveau_volt.c |  2 +-
 4 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index d7d51deb34b6..39d6bb313bab 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -414,8 +414,8 @@ struct nouveau_gpio_engine {
 };
 
 struct nouveau_pm_voltage_level {
-	u8 voltage;
-	u8 vid;
+	u32 voltage; /* microvolts */
+	u8  vid;
 };
 
 struct nouveau_pm_voltage {
@@ -451,8 +451,8 @@ struct nouveau_pm_level {
 	u32 unk05;
 	u32 unk0a;
 
-	u8 voltage;
-	u8 fanspeed;
+	u32 voltage; /* microvolts */
+	u8  fanspeed;
 
 	u16 memscript;
 	struct nouveau_pm_memtiming *timing;
diff --git a/drivers/gpu/drm/nouveau/nouveau_perf.c b/drivers/gpu/drm/nouveau/nouveau_perf.c
index ef9dec0e6f8b..117ce16f3580 100644
--- a/drivers/gpu/drm/nouveau/nouveau_perf.c
+++ b/drivers/gpu/drm/nouveau/nouveau_perf.c
@@ -203,7 +203,8 @@ nouveau_perf_init(struct drm_device *dev)
 		case 0x13:
 		case 0x15:
 			perflvl->fanspeed = entry[55];
-			perflvl->voltage = (recordlen > 56) ? entry[56] : 0;
+			if (recordlen > 56)
+				perflvl->voltage = entry[56] * 10000;
 			perflvl->core = ROM32(entry[1]) * 10;
 			perflvl->memory = ROM32(entry[5]) * 20;
 			break;
@@ -211,7 +212,7 @@ nouveau_perf_init(struct drm_device *dev)
 		case 0x23:
 		case 0x24:
 			perflvl->fanspeed = entry[4];
-			perflvl->voltage = entry[5];
+			perflvl->voltage = entry[5] * 10000;
 			perflvl->core = ROM16(entry[6]) * 1000;
 
 			if (dev_priv->chipset == 0x49 ||
@@ -223,7 +224,7 @@ nouveau_perf_init(struct drm_device *dev)
 			break;
 		case 0x25:
 			perflvl->fanspeed = entry[4];
-			perflvl->voltage = entry[5];
+			perflvl->voltage = entry[5] * 10000;
 			perflvl->core = ROM16(entry[6]) * 1000;
 			perflvl->shader = ROM16(entry[10]) * 1000;
 			perflvl->memory = ROM16(entry[12]) * 1000;
@@ -232,7 +233,7 @@ nouveau_perf_init(struct drm_device *dev)
 			perflvl->memscript = ROM16(entry[2]);
 		case 0x35:
 			perflvl->fanspeed = entry[6];
-			perflvl->voltage = entry[7];
+			perflvl->voltage = entry[7] * 10000;
 			perflvl->core = ROM16(entry[8]) * 1000;
 			perflvl->shader = ROM16(entry[10]) * 1000;
 			perflvl->memory = ROM16(entry[12]) * 1000;
@@ -242,7 +243,7 @@ nouveau_perf_init(struct drm_device *dev)
 		case 0x40:
 #define subent(n) entry[perf[2] + ((n) * perf[3])]
 			perflvl->fanspeed = 0; /*XXX*/
-			perflvl->voltage = entry[2];
+			perflvl->voltage = entry[2] * 10000;
 			if (dev_priv->card_type == NV_50) {
 				perflvl->core = ROM16(subent(0)) & 0xfff;
 				perflvl->shader = ROM16(subent(1)) & 0xfff;
diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
index da8d994d5e8a..f5703ef68518 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -168,7 +168,7 @@ nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
 
 	v[0] = '\0';
 	if (perflvl->voltage)
-		snprintf(v, sizeof(v), " voltage %dmV", perflvl->voltage * 10);
+		snprintf(v, sizeof(v), " voltage %dmV", perflvl->voltage / 1000);
 
 	f[0] = '\0';
 	if (perflvl->fanspeed)
diff --git a/drivers/gpu/drm/nouveau/nouveau_volt.c b/drivers/gpu/drm/nouveau/nouveau_volt.c
index 75e872741d92..9eec27581b16 100644
--- a/drivers/gpu/drm/nouveau/nouveau_volt.c
+++ b/drivers/gpu/drm/nouveau/nouveau_volt.c
@@ -203,7 +203,7 @@ nouveau_volt_init(struct drm_device *dev)
 
 	entry = volt + headerlen;
 	for (i = 0; i < entries; i++, entry += recordlen) {
-		voltage->level[i].voltage = entry[0];
+		voltage->level[i].voltage = entry[0] * 10000;
 		voltage->level[i].vid     = entry[1] >> vidshift;
 	}
 	voltage->nr_level  = entries;