Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next
[sfrench/cifs-2.6.git] / drivers / gpu / drm / radeon / cik.c
index e0db2460243c189fef264787bf279f161cf62b2a..e368ce22bcc4368caee774171ab5a6b0da362f16 100644 (file)
@@ -9150,23 +9150,10 @@ static u32 dce8_latency_watermark(struct dce8_wm_params *wm)
        a.full = dfixed_const(available_bandwidth);
        b.full = dfixed_const(wm->num_heads);
        a.full = dfixed_div(a, b);
+       tmp = div_u64((u64) dmif_size * (u64) wm->disp_clk, mc_latency + 512);
+       tmp = min(dfixed_trunc(a), tmp);
 
-       b.full = dfixed_const(mc_latency + 512);
-       c.full = dfixed_const(wm->disp_clk);
-       b.full = dfixed_div(b, c);
-
-       c.full = dfixed_const(dmif_size);
-       b.full = dfixed_div(c, b);
-
-       tmp = min(dfixed_trunc(a), dfixed_trunc(b));
-
-       b.full = dfixed_const(1000);
-       c.full = dfixed_const(wm->disp_clk);
-       b.full = dfixed_div(c, b);
-       c.full = dfixed_const(wm->bytes_per_pixel);
-       b.full = dfixed_mul(b, c);
-
-       lb_fill_bw = min(tmp, dfixed_trunc(b));
+       lb_fill_bw = min(tmp, wm->disp_clk * wm->bytes_per_pixel / 1000);
 
        a.full = dfixed_const(max_src_lines_per_dst_line * wm->src_width * wm->bytes_per_pixel);
        b.full = dfixed_const(1000);
@@ -9274,14 +9261,14 @@ static void dce8_program_watermarks(struct radeon_device *rdev,
 {
        struct drm_display_mode *mode = &radeon_crtc->base.mode;
        struct dce8_wm_params wm_low, wm_high;
-       u32 pixel_period;
+       u32 active_time;
        u32 line_time = 0;
        u32 latency_watermark_a = 0, latency_watermark_b = 0;
        u32 tmp, wm_mask;
 
        if (radeon_crtc->base.enabled && num_heads && mode) {
-               pixel_period = 1000000 / (u32)mode->clock;
-               line_time = min((u32)mode->crtc_htotal * pixel_period, (u32)65535);
+               active_time = 1000000UL * (u32)mode->crtc_hdisplay / (u32)mode->clock;
+               line_time = min((u32) (1000000UL * (u32)mode->crtc_htotal / (u32)mode->clock), (u32)65535);
 
                /* watermark for high clocks */
                if ((rdev->pm.pm_method == PM_METHOD_DPM) &&
@@ -9297,7 +9284,7 @@ static void dce8_program_watermarks(struct radeon_device *rdev,
 
                wm_high.disp_clk = mode->clock;
                wm_high.src_width = mode->crtc_hdisplay;
-               wm_high.active_time = mode->crtc_hdisplay * pixel_period;
+               wm_high.active_time = active_time;
                wm_high.blank_time = line_time - wm_high.active_time;
                wm_high.interlaced = false;
                if (mode->flags & DRM_MODE_FLAG_INTERLACE)
@@ -9337,7 +9324,7 @@ static void dce8_program_watermarks(struct radeon_device *rdev,
 
                wm_low.disp_clk = mode->clock;
                wm_low.src_width = mode->crtc_hdisplay;
-               wm_low.active_time = mode->crtc_hdisplay * pixel_period;
+               wm_low.active_time = active_time;
                wm_low.blank_time = line_time - wm_low.active_time;
                wm_low.interlaced = false;
                if (mode->flags & DRM_MODE_FLAG_INTERLACE)