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Commit f1ad90da authored by Laurent Pinchart's avatar Laurent Pinchart
Browse files

fbdev: sh_mobile_lcdc: Turn dot clock on before resuming from runtime PM 



Resuming from runtime PM restores all LCDC registers. If the dot clock
is off at that time display panning information will be corrupted.

Turn the dot clock on before resuming from runtime PM. Similarly,
turn the clock off after suspending the LCDC.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
parent 91142bfe

drivers/video/sh_mobile_lcdcfb.c

+3 −3
Original line number Diff line number Diff line
@@ -256,9 +256,9 @@ struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { 
static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv)

{

	if (atomic_inc_and_test(&priv->hw_usecnt)) {

		pm_runtime_get_sync(priv->dev);

		if (priv->dot_clk)

			clk_enable(priv->dot_clk);

		pm_runtime_get_sync(priv->dev);

		if (priv->meram_dev && priv->meram_dev->pdev)

			pm_runtime_get_sync(&priv->meram_dev->pdev->dev);

	}
@@ -267,11 +267,11 @@ static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) 
static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv)

{

	if (atomic_sub_return(1, &priv->hw_usecnt) == -1) {

		if (priv->dot_clk)

			clk_disable(priv->dot_clk);

		if (priv->meram_dev && priv->meram_dev->pdev)

			pm_runtime_put_sync(&priv->meram_dev->pdev->dev);

		pm_runtime_put(priv->dev);

		if (priv->dot_clk)

			clk_disable(priv->dot_clk);

	}

}