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drm/i915: Fix cursor 'cpp' in watermark calculatins for old platforms

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The watermark code for the old platforms (g4x and older) uses the
primary plane cpp when computing cursor watermarks. To keep the fix
simple let's just hardcode cpp=4 for the cursor on those platforms
since that's all we support.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170421181432.15216-8-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2017-04-21 21:14:24 +03:00
parent 62571fc365
commit 99834b1487
1 changed files with 5 additions and 5 deletions
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10
drivers/gpu/drm/i915/intel_pm.c
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@ -768,7 +768,7 @@ static void pineview_update_wm(struct intel_crtc *unused_crtc)
/* cursor SR */
wm = intel_calculate_wm(clock, &pineview_cursor_wm,
pineview_display_wm.fifo_size,
cpp, latency->cursor_sr);
4, latency->cursor_sr);
reg = I915_READ(DSPFW3);
reg &= ~DSPFW_CURSOR_SR_MASK;
reg |= FW_WM(wm, CURSOR_SR);
@ -786,7 +786,7 @@ static void pineview_update_wm(struct intel_crtc *unused_crtc)
/* cursor HPLL off SR */
wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm,
pineview_display_hplloff_wm.fifo_size,
cpp, latency->cursor_hpll_disable);
4, latency->cursor_hpll_disable);
reg = I915_READ(DSPFW3);
reg &= ~DSPFW_HPLL_CURSOR_MASK;
reg |= FW_WM(wm, HPLL_CURSOR);
@ -842,7 +842,7 @@ static bool g4x_compute_wm0(struct drm_i915_private *dev_priv,
/* Use the large buffer method to calculate cursor watermark */
line_time_us = max(htotal * 1000 / clock, 1);
line_count = (cursor_latency_ns / line_time_us + 1000) / 1000;
entries = line_count * crtc->base.cursor->state->crtc_w * cpp;
entries = line_count * crtc->base.cursor->state->crtc_w * 4;
tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
if (tlb_miss > 0)
entries += tlb_miss;
@ -930,7 +930,7 @@ static bool g4x_compute_srwm(struct drm_i915_private *dev_priv,
*display_wm = entries + display->guard_size;
/* calculate the self-refresh watermark for display cursor */
entries = line_count * cpp * crtc->base.cursor->state->crtc_w;
entries = line_count * 4 * crtc->base.cursor->state->crtc_w;
entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
*cursor_wm = entries + cursor->guard_size;
@ -1736,7 +1736,7 @@ static void i965_update_wm(struct intel_crtc *unused_crtc)
entries, srwm);
entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
cpp * crtc->base.cursor->state->crtc_w;
4 * crtc->base.cursor->state->crtc_w;
entries = DIV_ROUND_UP(entries,
i965_cursor_wm_info.cacheline_size);
cursor_sr = i965_cursor_wm_info.fifo_size -