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-rw-r--r--drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
index 1f805eb8fdb5..145047e19394 100644
--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
@@ -265,7 +265,7 @@ static int rpi_touchscreen_noop(struct drm_panel *panel)
return 0;
}
-static int rpi_touchscreen_enable(struct drm_panel *panel)
+static int rpi_touchscreen_prepare(struct drm_panel *panel)
{
struct rpi_touchscreen *ts = panel_to_ts(panel);
int i;
@@ -295,6 +295,13 @@ static int rpi_touchscreen_enable(struct drm_panel *panel)
rpi_touchscreen_write(ts, DSI_STARTDSI, 0x01);
msleep(100);
+ return 0;
+}
+
+static int rpi_touchscreen_enable(struct drm_panel *panel)
+{
+ struct rpi_touchscreen *ts = panel_to_ts(panel);
+
/* Turn on the backlight. */
rpi_touchscreen_i2c_write(ts, REG_PWM, 255);
@@ -349,7 +356,7 @@ static int rpi_touchscreen_get_modes(struct drm_panel *panel,
static const struct drm_panel_funcs rpi_touchscreen_funcs = {
.disable = rpi_touchscreen_disable,
.unprepare = rpi_touchscreen_noop,
- .prepare = rpi_touchscreen_noop,
+ .prepare = rpi_touchscreen_prepare,
.enable = rpi_touchscreen_enable,
.get_modes = rpi_touchscreen_get_modes,
};