@@ -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)
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 <archit@ti.com> --- drivers/video/omap2/dss/hdmi.c | 8 ++++++++ 1 file changed, 8 insertions(+)