drm/panel: Use backlight_enable/disable helpers

Use backlight_enable/disable helpers instead of changing
the property and calling backlight_update_status for cleaner
and simpler code and also to avoid repetitions.

Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/bc80cdb5cf1a6638dce9fb9f8da674e361e3b749.1516810725.git.meghana.madhyastha@gmail.com

4 files changed, 8 insertions, 24 deletions

diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index 6ba93449fcfb..4c1b29eec2a5 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -45,8 +45,7 @@ static int innolux_panel_disable(struct drm_panel *panel)
         if (!innolux->enabled)
                 return 0;
 
-        innolux->backlight->props.power = FB_BLANK_POWERDOWN;
-        backlight_update_status(innolux->backlight);
+        backlight_disable(innolux->backlight);
 
         err = mipi_dsi_dcs_set_display_off(innolux->link);
         if (err < 0)
@@ -151,8 +150,7 @@ static int innolux_panel_enable(struct drm_panel *panel)
         if (innolux->enabled)
                 return 0;
 
-        innolux->backlight->props.power = FB_BLANK_UNBLANK;
-        ret = backlight_update_status(innolux->backlight);
+        ret = backlight_enable(innolux->backlight);
         if (ret) {
                 DRM_DEV_ERROR(panel->drm->dev,
                               "Failed to enable backlight %d\n", ret);
diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
index 5b2340ef74ed..0a94ab79a6c0 100644
--- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -192,8 +192,7 @@ static int jdi_panel_disable(struct drm_panel *panel)
         if (!jdi->enabled)
                 return 0;
 
-        jdi->backlight->props.power = FB_BLANK_POWERDOWN;
-        backlight_update_status(jdi->backlight);
+        backlight_disable(jdi->backlight);
 
         jdi->enabled = false;
 
@@ -289,8 +288,7 @@ static int jdi_panel_enable(struct drm_panel *panel)
         if (jdi->enabled)
                 return 0;
 
-        jdi->backlight->props.power = FB_BLANK_UNBLANK;
-        backlight_update_status(jdi->backlight);
+        backlight_enable(jdi->backlight);
 
         jdi->enabled = true;
 
diff --git a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
index 3cce3ca19601..072c0fc794d6 100644
--- a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
@@ -96,10 +96,7 @@ static int sharp_panel_disable(struct drm_panel *panel)
         if (!sharp->enabled)
                 return 0;
 
-        if (sharp->backlight) {
-                sharp->backlight->props.power = FB_BLANK_POWERDOWN;
-                backlight_update_status(sharp->backlight);
-        }
+        backlight_disable(sharp->backlight);
 
         sharp->enabled = false;
 
@@ -263,10 +260,7 @@ static int sharp_panel_enable(struct drm_panel *panel)
         if (sharp->enabled)
                 return 0;
 
-        if (sharp->backlight) {
-                sharp->backlight->props.power = FB_BLANK_UNBLANK;
-                backlight_update_status(sharp->backlight);
-        }
+        backlight_enable(sharp->backlight);
 
         sharp->enabled = true;
 
diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
index 3aeb0bda4947..8a5137963c7d 100644
--- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
@@ -117,10 +117,7 @@ static int sharp_nt_panel_disable(struct drm_panel *panel)
         if (!sharp_nt->enabled)
                 return 0;
 
-        if (sharp_nt->backlight) {
-                sharp_nt->backlight->props.power = FB_BLANK_POWERDOWN;
-                backlight_update_status(sharp_nt->backlight);
-        }
+        backlight_disable(sharp_nt->backlight);
 
         sharp_nt->enabled = false;
 
@@ -203,10 +200,7 @@ static int sharp_nt_panel_enable(struct drm_panel *panel)
         if (sharp_nt->enabled)
                 return 0;
 
-        if (sharp_nt->backlight) {
-                sharp_nt->backlight->props.power = FB_BLANK_UNBLANK;
-                backlight_update_status(sharp_nt->backlight);
-        }
+        backlight_enable(sharp_nt->backlight);
 
         sharp_nt->enabled = true;