OMAPDSS: adopt pinctrl support (5038bb8c) · Commits · e / devices / android_kernel_teracube_emerald

Update omapdss driver to set the state of the pins to: - "default on resume - "sleep" on suspend By optionally putting the pins into sleep state in the suspend callback we can accomplish two things. - minimize current leakage from pins and thus save power, - prevent the IP from driving pins output in an uncontrolled manner, which may happen if the power domain drops the domain regulator. Signed-off-by:

Dave Gerlach <d-gerlach@ti.com> Acked-by:

Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:

Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/fbdev/omap2/dss/dss.c

+6 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1264,12 +1264,18 @@ static int dss_runtime_suspend(struct device *dev)
	{		{
	dss_save_context();		dss_save_context();
	dss_set_min_bus_tput(dev, 0);		dss_set_min_bus_tput(dev, 0);

			pinctrl_pm_select_sleep_state(dev);

	return 0;		return 0;
	}		}

	static int dss_runtime_resume(struct device *dev)		static int dss_runtime_resume(struct device *dev)
	{		{
	int r;		int r;

			pinctrl_pm_select_default_state(dev);

	/*		/*
	* Set an arbitrarily high tput request to ensure OPP100.		* Set an arbitrarily high tput request to ensure OPP100.
	* What we should really do is to make a request to stay in OPP100,		* What we should really do is to make a request to stay in OPP100,