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-rw-r--r--drivers/gpu/drm/vc4/vc4_dpi.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
index 660feea0534d..7286a3333538 100644
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -13,6 +13,7 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
+#include <drm/drm_drv.h>
#include <drm/drm_edid.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
@@ -112,9 +113,16 @@ static const struct debugfs_reg32 dpi_regs[] = {
static void vc4_dpi_encoder_disable(struct drm_encoder *encoder)
{
+ struct drm_device *dev = encoder->dev;
struct vc4_dpi *dpi = to_vc4_dpi(encoder);
+ int idx;
+
+ if (!drm_dev_enter(dev, &idx))
+ return;
clk_disable_unprepare(dpi->pixel_clock);
+
+ drm_dev_exit(idx);
}
static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
@@ -125,6 +133,7 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
struct drm_connector_list_iter conn_iter;
struct drm_connector *connector = NULL, *connector_scan;
u32 dpi_c = DPI_ENABLE;
+ int idx;
int ret;
/* Look up the connector attached to DPI so we can get the
@@ -204,6 +213,9 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
dpi_c |= DPI_VSYNC_DISABLE;
}
+ if (!drm_dev_enter(dev, &idx))
+ return;
+
DPI_WRITE(DPI_C, dpi_c);
ret = clk_set_rate(dpi->pixel_clock, mode->clock * 1000);
@@ -213,6 +225,8 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
ret = clk_prepare_enable(dpi->pixel_clock);
if (ret)
DRM_ERROR("Failed to set clock rate: %d\n", ret);
+
+ drm_dev_exit(idx);
}
static enum drm_mode_status vc4_dpi_encoder_mode_valid(struct drm_encoder *encoder,