This is preparation for addition of generic eDP panel that
doesn't have any modes or delays defined.
Signed-off-by: Vasily Khoruzhick <anars...@gmail.com>
---
drivers/gpu/drm/panel/panel-simple.c | 21 +++++++++++++--------
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-simple.c
b/drivers/gpu/drm/panel/panel-simple.c
index 9c69e739a524..2f2cb2d81f2b 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -176,7 +176,7 @@ static int panel_simple_disable(struct drm_panel *panel)
backlight_update_status(p->backlight);
}
- if (p->desc->delay.disable)
+ if (p->desc && p->desc->delay.disable)
msleep(p->desc->delay.disable);
p->enabled = false;
@@ -195,7 +195,7 @@ static int panel_simple_unprepare(struct drm_panel *panel)
regulator_disable(p->supply);
- if (p->desc->delay.unprepare)
+ if (p->desc && p->desc->delay.unprepare)
msleep(p->desc->delay.unprepare);
p->prepared = false;
@@ -220,11 +220,13 @@ static int panel_simple_prepare(struct drm_panel *panel)
gpiod_set_value_cansleep(p->enable_gpio, 1);
- delay = p->desc->delay.prepare;
- if (p->no_hpd)
- delay += p->desc->delay.hpd_absent_delay;
- if (delay)
- msleep(delay);
+ if (p->desc) {
+ delay = p->desc->delay.prepare;
+ if (p->no_hpd)
+ delay += p->desc->delay.hpd_absent_delay;
+ if (delay)
+ msleep(delay);
+ }
p->prepared = true;
@@ -238,7 +240,7 @@ static int panel_simple_enable(struct drm_panel *panel)
if (p->enabled)
return 0;
- if (p->desc->delay.enable)
+ if (p->desc && p->desc->delay.enable)
msleep(p->desc->delay.enable);
if (p->backlight) {
@@ -280,6 +282,9 @@ static int panel_simple_get_timings(struct drm_panel *panel,
struct panel_simple *p = to_panel_simple(panel);
unsigned int i;
+ if (!p->desc)
+ return 0;
+
if (p->desc->num_timings < num_timings)
num_timings = p->desc->num_timings;
--
2.20.1
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