drm/i915: Compute WM for current cursor size

Now that we can use different cursor size, we can not hardcode 64 pixels
as the cursor width anymore.

v2: Apply to 965gm/g4x paths as well

Cc: Damien Lespiau <damien.lespiau@intel.com>
Cc: Sagar Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index faa059a..c1e2d75 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -1136,7 +1136,7 @@ static bool g4x_compute_wm0(struct drm_device *dev,
        /* 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 * 64 * pixel_size;
+       entries = line_count * to_intel_crtc(crtc)->cursor_width * pixel_size;
        tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
        if (tlb_miss > 0)
                entries += tlb_miss;
@@ -1222,7 +1222,7 @@ static bool g4x_compute_srwm(struct drm_device *dev,
        *display_wm = entries + display->guard_size;
 
        /* calculate the self-refresh watermark for display cursor */
-       entries = line_count * pixel_size * 64;
+       entries = line_count * pixel_size * to_intel_crtc(crtc)->cursor_width;
        entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
        *cursor_wm = entries + cursor->guard_size;
 
@@ -1457,7 +1457,7 @@ static void i965_update_wm(struct drm_crtc *unused_crtc)
                              entries, srwm);
 
                entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
-                       pixel_size * 64;
+                       pixel_size * to_intel_crtc(crtc)->cursor_width;
                entries = DIV_ROUND_UP(entries,
                                          i965_cursor_wm_info.cacheline_size);
                cursor_sr = i965_cursor_wm_info.fifo_size -
@@ -2120,7 +2120,7 @@ static void ilk_compute_wm_parameters(struct drm_crtc *crtc,
                p->pri.bytes_per_pixel = crtc->fb->bits_per_pixel / 8;
                p->cur.bytes_per_pixel = 4;
                p->pri.horiz_pixels = intel_crtc->config.pipe_src_w;
-               p->cur.horiz_pixels = 64;
+               p->cur.horiz_pixels = intel_crtc->cursor_width;
                /* TODO: for now, assume primary and cursor planes are always enabled. */
                p->pri.enabled = true;
                p->cur.enabled = true;