drm/nouveau/pm: calculate memory timings at perflvl creation time

Statically generating the PFB register and MR values for each timing set
turns out to be insufficient.  There's at least one (so far) known piece
of information which effects MR values which is stored in the perflvl
entry on some chipsets (and in another table on later ones), which is
disconnected from the timing table entries.

After this change we will generate a timing set based on an input clock
frequency instead, and have this data stored in the performance level
data.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>

1 files changed, 3 insertions, 20 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_perf.c b/drivers/gpu/drm/nouveau/nouveau_perf.c
index ad990553d115..150ff415a172 100644
--- a/drivers/gpu/drm/nouveau/nouveau_perf.c
+++ b/drivers/gpu/drm/nouveau/nouveau_perf.c
@@ -89,7 +89,7 @@ nouveau_perf_rammap(struct drm_device *dev, u32 freq,
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct bit_entry P;
-	u8 *perf, i;
+	u8 *perf, i = 0;
 
 	if (!bit_table(dev, 'P', &P) && P.version == 2) {
 		u8 *rammap = ROMPTR(dev, P.data[4]);
@@ -158,7 +158,7 @@ nouveau_perf_ramcfg(struct drm_device *dev, u32 freq, u8 *ver, u8 *len)
 	return NULL;
 }
 
-static u8 *
+u8 *
 nouveau_perf_timing(struct drm_device *dev, u32 freq, u8 *ver, u8 *len)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -384,24 +384,7 @@ nouveau_perf_init(struct drm_device *dev)
 		}
 
 		/* get the corresponding memory timings */
-#if 0
-		if (version == 0x15) {
-			memtimings->timing[i].id = i;
-			nv30_mem_timing_entry(dev, &mt_hdr,
-				     (struct nouveau_pm_tbl_entry *) &entry[41],
-				     0, &memtimings->timing[i]);
-			perflvl->timing = &memtimings->timing[i];
-		} else if (version > 0x15) {
-			/* last 3 args are for < 0x40, ignored for >= 0x40 */
-			perflvl->timing =
-				nouveau_perf_timing(dev, &P,
-						    perflvl->memory / 1000,
-						    entry + perf[3],
-						    perf[5], perf[4]);
-		}
-#else
-		perflvl->timing = NULL;
-#endif
+		perflvl->timing = nouveau_mem_timing(dev, perflvl->memory);
 
 		snprintf(perflvl->name, sizeof(perflvl->name),
 			 "performance_level_%d", i);