diff options
Diffstat (limited to 'drivers/gpu/drm/tilcdc/tilcdc_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index 4802da8e6d6f..aaf8989810b1 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -573,7 +573,8 @@ void tilcdc_crtc_update_clk(struct drm_crtc *crtc) struct drm_device *dev = crtc->dev; struct tilcdc_drm_private *priv = dev->dev_private; int dpms = tilcdc_crtc->dpms; - unsigned int lcd_clk, div; + unsigned long lcd_clk; + const unsigned clkdiv = 2; /* using a fixed divider of 2 */ int ret; pm_runtime_get_sync(dev->dev); @@ -581,22 +582,21 @@ void tilcdc_crtc_update_clk(struct drm_crtc *crtc) if (dpms == DRM_MODE_DPMS_ON) tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); - /* in raster mode, minimum divisor is 2: */ - ret = clk_set_rate(priv->disp_clk, crtc->mode.clock * 1000 * 2); - if (ret) { + /* mode.clock is in KHz, set_rate wants parameter in Hz */ + ret = clk_set_rate(priv->clk, crtc->mode.clock * 1000 * clkdiv); + if (ret < 0) { dev_err(dev->dev, "failed to set display clock rate to: %d\n", crtc->mode.clock); goto out; } lcd_clk = clk_get_rate(priv->clk); - div = lcd_clk / (crtc->mode.clock * 1000); - DBG("lcd_clk=%u, mode clock=%d, div=%u", lcd_clk, crtc->mode.clock, div); - DBG("fck=%lu, dpll_disp_ck=%lu", clk_get_rate(priv->clk), clk_get_rate(priv->disp_clk)); + DBG("lcd_clk=%lu, mode clock=%d, div=%u", + lcd_clk, crtc->mode.clock, clkdiv); /* Configure the LCD clock divisor. */ - tilcdc_write(dev, LCDC_CTRL_REG, LCDC_CLK_DIVISOR(div) | + tilcdc_write(dev, LCDC_CTRL_REG, LCDC_CLK_DIVISOR(clkdiv) | LCDC_RASTER_MODE); if (priv->rev == 2) |