From 548f245ba6a318ef93f4d79bcc15cfe59a86f0d5 Mon Sep 17 00:00:00 2001
From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Thu, 17 Feb 2011 10:40:53 -0800
Subject: [PATCH] drm/i915: fix per-pipe reads after "cleanup"
In a few places I replaced reads of per-pipe registers with the actual
register offsets themselves (converting I915_READ(reg) to _PIPE(reg)).
Alexey caught this on his 9xx machine because the cursor control write
was affected. A quick audit showed a few more places where I'd borked
a read, so here's a patch to fix things up.
Reported-by: Alexey Fisher <bug-track@fisher-privat.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[ickle: compilation fix]
Tested-by: Alexey Fisher <bug-track@fisher-privat.net>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/intel_display.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6bda30dae400..1a15438512f1 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5220,7 +5220,7 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
bool visible = base != 0;
if (intel_crtc->cursor_visible != visible) {
- uint32_t cntl = CURCNTR(pipe);
+ uint32_t cntl = I915_READ(CURCNTR(pipe));
if (base) {
cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
@@ -5590,7 +5590,7 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
- u32 dpll = DPLL(pipe);
+ u32 dpll = I915_READ(DPLL(pipe));
u32 fp;
intel_clock_t clock;
@@ -5675,13 +5675,14 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
struct drm_crtc *crtc)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
struct drm_display_mode *mode;
- int htot = HTOTAL(pipe);
- int hsync = HSYNC(pipe);
- int vtot = VTOTAL(pipe);
- int vsync = VSYNC(pipe);
+ int htot = I915_READ(HTOTAL(pipe));
+ int hsync = I915_READ(HSYNC(pipe));
+ int vtot = I915_READ(VTOTAL(pipe));
+ int vsync = I915_READ(VSYNC(pipe));
mode = kzalloc(sizeof(*mode), GFP_KERNEL);
if (!mode)
--
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