On 14/10/2024 at 08:46, Manikandan Muralidharan wrote:
update the LCDC_ATTRE register in drm plane atomic_disable to handle
the configuration changes of each layer when a plane is disabled.
Signed-off-by: Manikandan Muralidharan <[email protected]>
Reviewed-by: Nicolas Ferre <[email protected]>
Thanks Mani. Best regards,
Nicolas
---
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 3 ++-
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 17 ++++++++++++++---
2 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
index e1a0bb24b511..53d47f01db0b 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
@@ -378,7 +378,8 @@ struct atmel_lcdc_dc_ops {
void (*lcdc_update_buffers)(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state,
u32 sr, int i);
- void (*lcdc_atomic_disable)(struct atmel_hlcdc_plane *plane);
+ void (*lcdc_atomic_disable)(struct atmel_hlcdc_plane *plane,
+ struct atmel_hlcdc_dc *dc);
void (*lcdc_update_general_settings)(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state
*state);
void (*lcdc_atomic_update)(struct atmel_hlcdc_plane *plane,
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
index 4a7ba0918eca..4bcaf2cd7672 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -816,7 +816,8 @@ static int atmel_hlcdc_plane_atomic_check(struct drm_plane
*p,
return 0;
}
-static void atmel_hlcdc_atomic_disable(struct atmel_hlcdc_plane *plane)
+static void atmel_hlcdc_atomic_disable(struct atmel_hlcdc_plane *plane,
+ struct atmel_hlcdc_dc *dc)
{
/* Disable interrupts */
atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IDR,
@@ -832,7 +833,8 @@ static void atmel_hlcdc_atomic_disable(struct
atmel_hlcdc_plane *plane)
atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR);
}
-static void atmel_xlcdc_atomic_disable(struct atmel_hlcdc_plane *plane)
+static void atmel_xlcdc_atomic_disable(struct atmel_hlcdc_plane *plane,
+ struct atmel_hlcdc_dc *dc)
{
/* Disable interrupts */
atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_XLCDC_LAYER_IDR,
@@ -842,6 +844,15 @@ static void atmel_xlcdc_atomic_disable(struct
atmel_hlcdc_plane *plane)
atmel_hlcdc_layer_write_reg(&plane->layer,
ATMEL_XLCDC_LAYER_ENR, 0);
+ /*
+ * Updating XLCDC_xxxCFGx, XLCDC_xxxFBA and XLCDC_xxxEN,
+ * (where xxx indicates each layer) requires writing one to the
+ * Update Attribute field for each layer in LCDC_ATTRE register for
SAM9X7.
+ */
+ regmap_write(dc->hlcdc->regmap, ATMEL_XLCDC_ATTRE,
ATMEL_XLCDC_BASE_UPDATE |
+ ATMEL_XLCDC_OVR1_UPDATE | ATMEL_XLCDC_OVR3_UPDATE |
+ ATMEL_XLCDC_HEO_UPDATE);
+
/* Clear all pending interrupts */
atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_XLCDC_LAYER_ISR);
}
@@ -852,7 +863,7 @@ static void atmel_hlcdc_plane_atomic_disable(struct
drm_plane *p,
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
struct atmel_hlcdc_dc *dc = plane->base.dev->dev_private;
- dc->desc->ops->lcdc_atomic_disable(plane);
+ dc->desc->ops->lcdc_atomic_disable(plane, dc);
}
static void atmel_hlcdc_atomic_update(struct atmel_hlcdc_plane *plane,
