drm/nv50/disp: more accurate function to determine active crtcs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 7ba28e0..ce440e2 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -50,6 +50,29 @@
return 4;
}
+u32
+nv50_display_active_crtcs(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ u32 mask = 0;
+ int i;
+
+ if (dev_priv->chipset < 0x90 ||
+ dev_priv->chipset == 0x92 ||
+ dev_priv->chipset == 0xa0) {
+ for (i = 0; i < 2; i++)
+ mask |= nv_rd32(dev, NV50_PDISPLAY_SOR_MODE_CTRL_C(i));
+ } else {
+ for (i = 0; i < 4; i++)
+ mask |= nv_rd32(dev, NV90_PDISPLAY_SOR_MODE_CTRL_C(i));
+ }
+
+ for (i = 0; i < 3; i++)
+ mask |= nv_rd32(dev, NV50_PDISPLAY_DAC_MODE_CTRL_C(i));
+
+ return mask & 3;
+}
+
static int
evo_icmd(struct drm_device *dev, int ch, u32 mthd, u32 data)
{
diff --git a/drivers/gpu/drm/nouveau/nv50_display.h b/drivers/gpu/drm/nouveau/nv50_display.h
index 95874f7..5d3dd14 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.h
+++ b/drivers/gpu/drm/nouveau/nv50_display.h
@@ -74,6 +74,8 @@
int nv50_crtc_blank(struct nouveau_crtc *, bool blank);
int nv50_crtc_set_clock(struct drm_device *, int head, int pclk);
+u32 nv50_display_active_crtcs(struct drm_device *);
+
int nv50_display_sync(struct drm_device *);
int nv50_display_flip_next(struct drm_crtc *, struct drm_framebuffer *,
struct nouveau_channel *chan);
diff --git a/drivers/gpu/drm/nouveau/nv50_pm.c b/drivers/gpu/drm/nouveau/nv50_pm.c
index 17eb327..109e473 100644
--- a/drivers/gpu/drm/nouveau/nv50_pm.c
+++ b/drivers/gpu/drm/nouveau/nv50_pm.c
@@ -28,6 +28,7 @@
#include "nouveau_hw.h"
#include "nouveau_pm.h"
#include "nouveau_hwsq.h"
+#include "nv50_display.h"
enum clk_src {
clk_src_crystal,
@@ -535,6 +536,7 @@
struct nv50_pm_state *info)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
+ u32 crtc_mask = nv50_display_active_crtcs(dev);
struct nouveau_mem_exec_func exec = {
.dev = dev,
.precharge = mclk_precharge,
@@ -550,9 +552,8 @@
};
struct hwsq_ucode *hwsq = &info->mclk_hwsq;
struct pll_lims pll;
- u32 crtc_mask = 0;
int N, M, P;
- int ret, i;
+ int ret;
/* use pcie refclock if possible, otherwise use mpll */
info->mctrl = nv_rd32(dev, 0x004008);
@@ -569,12 +570,6 @@
info->mcoef = (N << 8) | M;
}
- /* determine active crtcs */
- for (i = 0; i < 2; i++) {
- if (nv_rd32(dev, NV50_PDISPLAY_CRTC_C(i, CLOCK)))
- crtc_mask |= (1 << i);
- }
-
/* build the ucode which will reclock the memory for us */
hwsq_init(hwsq);
if (crtc_mask) {