Set possible_clones field to report that the writeback connector and the one driving the display could be enabled at the same time.
Signed-off-by: Alexandru Gheorghe alexandru-cosmin.gheorghe@arm.com
Changes since v2: - Use proper style for multi-line comments. --- drivers/gpu/drm/arm/malidp_drv.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index 5b72605..4169a72 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -616,6 +616,7 @@ static int malidp_bind(struct device *dev) struct malidp_hw_device *hwdev; struct platform_device *pdev = to_platform_device(dev); struct of_device_id const *dev_id; + struct drm_encoder *encoder; /* number of lines for the R, G and B output */ u8 output_width[MAX_OUTPUT_CHANNELS]; int ret = 0, i; @@ -737,6 +738,16 @@ static int malidp_bind(struct device *dev) goto bind_fail; }
+ /* + * We expect to have a maximum of two encoders one for the actual + * display and a virtual one for the writeback connector + */ + WARN_ON(drm->mode_config.num_encoder > 2); + list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) { + encoder->possible_clones = + (1 << drm->mode_config.num_encoder) - 1; + } + ret = malidp_irq_init(pdev); if (ret < 0) goto irq_init_fail;