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authorBen Skeggs <bskeggs@redhat.com>2013-06-03 16:07:06 +1000
committerBen Skeggs <bskeggs@redhat.com>2013-06-05 14:03:01 +1000
commitea9197cc323839ef3d5280c0453b2c622caa6bc7 (patch)
tree92285d555c62a69c58722fff161ff24e7070513f /drivers/gpu
parent89e033a4bc688bc6631c6de8b66d7f26f8e0652b (diff)
downloadvexpress-lsk-ea9197cc323839ef3d5280c0453b2c622caa6bc7.tar.gz
drm/nv50/disp: force dac power state during load detect
fdo#64904 Reported-by: Gerhard Bräunlich <wippbox@gmx.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c4
-rw-r--r--drivers/gpu/drm/nouveau/core/include/core/class.h2
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c
index d0817d94454..a60a5accb54 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c
@@ -50,11 +50,15 @@ nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval)
{
const u32 doff = (or * 0x800);
int load = -EINVAL;
+ nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80150000);
+ nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000);
nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval);
udelay(9500);
nv_wr32(priv, 0x61a00c + doff, 0x80000000);
load = (nv_rd32(priv, 0x61a00c + doff) & 0x38000000) >> 27;
nv_wr32(priv, 0x61a00c + doff, 0x00000000);
+ nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80550000);
+ nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000);
return load;
}
diff --git a/drivers/gpu/drm/nouveau/core/include/core/class.h b/drivers/gpu/drm/nouveau/core/include/core/class.h
index 0a393f7f055..5a5961b6a6a 100644
--- a/drivers/gpu/drm/nouveau/core/include/core/class.h
+++ b/drivers/gpu/drm/nouveau/core/include/core/class.h
@@ -218,7 +218,7 @@ struct nv04_display_class {
#define NV50_DISP_DAC_PWR_STATE 0x00000040
#define NV50_DISP_DAC_PWR_STATE_ON 0x00000000
#define NV50_DISP_DAC_PWR_STATE_OFF 0x00000040
-#define NV50_DISP_DAC_LOAD 0x0002000c
+#define NV50_DISP_DAC_LOAD 0x00020100
#define NV50_DISP_DAC_LOAD_VALUE 0x00000007
#define NV50_DISP_PIOR_MTHD 0x00030000