From: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Date: Fri, 13 Jul 2018 16:11:00 +0100
Subject: drm: mali-dp: Set encoder possible_clones
Git-commit: 2e012e76ad59edb4a5a175c0957a44337dc39d87
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
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>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/arm/malidp_drv.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- 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 *de
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 +738,15 @@ static int malidp_bind(struct device *de
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;