The hdmi interface driver exposes functions to the hdmi panel driver to get and configure the interface timings maintained by the hdmi driver.
These timings(stored in hdmi.ip_data.cfg) should be protected by the hdmi lock to ensure they are called sequentially, this is similar to how hdmi enable and disable functions need locking. Signed-off-by: Archit Taneja <[email protected]> --- drivers/video/omap2/dss/hdmi.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c index f577c8e..171c695 100644 --- a/drivers/video/omap2/dss/hdmi.c +++ b/drivers/video/omap2/dss/hdmi.c @@ -547,7 +547,11 @@ static void hdmi_power_off(struct omap_dss_device *dssdev) void omapdss_hdmi_display_get_timing(struct omap_dss_device *dssdev, struct omap_video_timings *timings) { + mutex_lock(&hdmi.lock); + *timings = hdmi.ip_data.cfg.timings; + + mutex_unlock(&hdmi.lock); } int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev, @@ -570,6 +574,8 @@ void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev, struct hdmi_cm cm; const struct hdmi_config *t; + mutex_lock(&hdmi.lock); + cm = hdmi_get_code(timings); hdmi.ip_data.cfg.cm = cm; @@ -588,6 +594,8 @@ void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev, } else { dss_mgr_set_timings(dssdev->manager, &t->timings); } + + mutex_unlock(&hdmi.lock); } static void hdmi_dump_regs(struct seq_file *s) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
