diff options
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_dpi.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_dpi.c | 14 |
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, |