From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomi Valkeinen Date: Wed, 09 Dec 2015 15:59:29 +0000 Subject: [PATCH 01/23] OMAPDSS: adopt pinctrl support Message-Id: <1449676791-26304-2-git-send-email-tomi.valkeinen@ti.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-fbdev@vger.kernel.org From: Dave Gerlach 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 Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/omap2/dss/dss.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/video/fbdev/omap2/dss/dss.c b/drivers/video/fbdev/omap2/dss/dss.c index 9200a8668b49..f95ff319e68e 100644 --- a/drivers/video/fbdev/omap2/dss/dss.c +++ b/drivers/video/fbdev/omap2/dss/dss.c @@ -1264,12 +1264,18 @@ static int dss_runtime_suspend(struct device *dev) { dss_save_context(); dss_set_min_bus_tput(dev, 0); + + pinctrl_pm_select_sleep_state(dev); + return 0; } static int dss_runtime_resume(struct device *dev) { int r; + + pinctrl_pm_select_default_state(dev); + /* * Set an arbitrarily high tput request to ensure OPP100. * What we should really do is to make a request to stay in OPP100, -- 2.5.0