drm/omap: hdmi4_cec: Fix CEC clock handling for PM
[ Upstream commit 36a1da15b5df493241b0011d2185fdd724ac1ed1 ] If CONFIG_OMAP4_DSS_HDMI_CEC is enabled in .config, deeper SoC idle states are blocked because the CEC clock gets always enabled on init. Let's fix the issue by moving the CEC clock handling to happen later in hdmi_cec_adap_enable() as suggested by Hans Verkuil <hverkuil@xs4all.nl>. This way the CEC clock gets only enabled when needed. This can be tested by doing cec-ctl --playback to enable the CEC, and doing cec-ctl --clear to disable it. Let's also fix the typo for "divider" in the comments while at it. Fixes: 8d7f934d ("omapdrm: hdmi4_cec: add OMAP4 HDMI CEC support") Suggested-by: NHans Verkuil <hverkuil@xs4all.nl> Cc: Hans Verkuil <hverkuil@xs4all.nl> Cc: Jyri Sarha <jsarha@ti.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NTony Lindgren <tony@atomide.com> Reviewed-by: NHans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190326151438.32414-1-tony@atomide.comSigned-off-by: NSasha Levin <sashal@kernel.org>
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