[PATCH 2/2] drm: mali-dp: fix stride setting for multi-plane formats
From: Liviu Dudau
Date: Thu Jan 26 2017 - 10:33:54 EST
From: Mihail Atanassov <mihail.atanassov@xxxxxxx>
Hardware has multiple (2 or 3, depending on model) stride
registers per layer; add a function that correctly takes that
into account. On hardware that only has 2 stride registers,
ensure that 3-plane (YUV) content has identical strides
for both chroma planes.
Signed-off-by: Mihail Atanassov <mihail.atanassov@xxxxxxx>
[Removed smart layer stride setup, comment and commit message clarifications]
Signed-off-by: Liviu Dudau <Liviu.Dudau@xxxxxxx>
---
drivers/gpu/drm/arm/malidp_hw.c | 17 ++++++++++-------
drivers/gpu/drm/arm/malidp_hw.h | 5 +++++
drivers/gpu/drm/arm/malidp_planes.c | 34 +++++++++++++++++++++++++++++++---
drivers/gpu/drm/arm/malidp_regs.h | 4 ++++
4 files changed, 50 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c
index 9ec6d6904f5e..488aedf5b58d 100644
--- a/drivers/gpu/drm/arm/malidp_hw.c
+++ b/drivers/gpu/drm/arm/malidp_hw.c
@@ -74,16 +74,16 @@ static const struct malidp_format_id malidp550_de_formats[] = {
};
static const struct malidp_layer malidp500_layers[] = {
- { DE_VIDEO1, MALIDP500_DE_LV_BASE, MALIDP500_DE_LV_PTR_BASE },
- { DE_GRAPHICS1, MALIDP500_DE_LG1_BASE, MALIDP500_DE_LG1_PTR_BASE },
- { DE_GRAPHICS2, MALIDP500_DE_LG2_BASE, MALIDP500_DE_LG2_PTR_BASE },
+ { DE_VIDEO1, MALIDP500_DE_LV_BASE, MALIDP500_DE_LV_PTR_BASE, MALIDP_DE_LV_STRIDE0 },
+ { DE_GRAPHICS1, MALIDP500_DE_LG1_BASE, MALIDP500_DE_LG1_PTR_BASE, MALIDP_DE_LG_STRIDE },
+ { DE_GRAPHICS2, MALIDP500_DE_LG2_BASE, MALIDP500_DE_LG2_PTR_BASE, MALIDP_DE_LG_STRIDE },
};
static const struct malidp_layer malidp550_layers[] = {
- { DE_VIDEO1, MALIDP550_DE_LV1_BASE, MALIDP550_DE_LV1_PTR_BASE },
- { DE_GRAPHICS1, MALIDP550_DE_LG_BASE, MALIDP550_DE_LG_PTR_BASE },
- { DE_VIDEO2, MALIDP550_DE_LV2_BASE, MALIDP550_DE_LV2_PTR_BASE },
- { DE_SMART, MALIDP550_DE_LS_BASE, MALIDP550_DE_LS_PTR_BASE },
+ { DE_VIDEO1, MALIDP550_DE_LV1_BASE, MALIDP550_DE_LV1_PTR_BASE, MALIDP_DE_LV_STRIDE0 },
+ { DE_GRAPHICS1, MALIDP550_DE_LG_BASE, MALIDP550_DE_LG_PTR_BASE, MALIDP_DE_LG_STRIDE },
+ { DE_VIDEO2, MALIDP550_DE_LV2_BASE, MALIDP550_DE_LV2_PTR_BASE, MALIDP_DE_LV_STRIDE0 },
+ { DE_SMART, MALIDP550_DE_LS_BASE, MALIDP550_DE_LS_PTR_BASE, 0 },
};
#define MALIDP_DE_DEFAULT_PREFETCH_START 5
@@ -447,6 +447,7 @@ const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES] = {
.set_config_valid = malidp500_set_config_valid,
.modeset = malidp500_modeset,
.rotmem_required = malidp500_rotmem_required,
+ .features = MALIDP_DEVICE_LV_HAS_3_STRIDES,
},
[MALIDP_550] = {
.map = {
@@ -480,6 +481,7 @@ const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES] = {
.set_config_valid = malidp550_set_config_valid,
.modeset = malidp550_modeset,
.rotmem_required = malidp550_rotmem_required,
+ .features = 0,
},
[MALIDP_650] = {
.map = {
@@ -514,6 +516,7 @@ const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES] = {
.set_config_valid = malidp550_set_config_valid,
.modeset = malidp550_modeset,
.rotmem_required = malidp550_rotmem_required,
+ .features = 0,
},
};
diff --git a/drivers/gpu/drm/arm/malidp_hw.h b/drivers/gpu/drm/arm/malidp_hw.h
index 4f8c884d1960..00974b59407d 100644
--- a/drivers/gpu/drm/arm/malidp_hw.h
+++ b/drivers/gpu/drm/arm/malidp_hw.h
@@ -58,6 +58,7 @@ struct malidp_layer {
u16 id; /* layer ID */
u16 base; /* address offset for the register bank */
u16 ptr; /* address offset for the pointer register */
+ u16 stride_offset; /* Offset to the first stride register. */
};
/* regmap features */
@@ -93,6 +94,10 @@ struct malidp_hw_regmap {
const u8 bus_align_bytes;
};
+/* device features */
+/* Unlike DP550/650, DP500 has 3 stride registers in its video layer. */
+#define MALIDP_DEVICE_LV_HAS_3_STRIDES BIT(0)
+
struct malidp_hw_device {
const struct malidp_hw_regmap map;
void __iomem *regs;
diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index 837874e79334..414aada10fe5 100644
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -37,7 +37,6 @@
#define LAYER_V_VAL(x) (((x) & 0x1fff) << 16)
#define MALIDP_LAYER_COMP_SIZE 0x010
#define MALIDP_LAYER_OFFSET 0x014
-#define MALIDP_LAYER_STRIDE 0x018
/*
* This 4-entry look-up-table is used to determine the full 8-bit alpha value
@@ -138,6 +137,16 @@ static int malidp_de_plane_check(struct drm_plane *plane,
(state->crtc_h < mp->hwdev->min_line_size))
return -EINVAL;
+ /*
+ * DP550/650 video layers can accept 3 plane formats only if
+ * fb->pitches[1] == fb->pitches[2] since they don't have a
+ * third plane stride register.
+ */
+ if (ms->n_planes == 3 &&
+ !(mp->hwdev->features & MALIDP_DEVICE_LV_HAS_3_STRIDES) &&
+ (state->fb->pitches[1] != state->fb->pitches[2]))
+ return -EINVAL;
+
/* packed RGB888 / BGR888 can't be rotated or flipped */
if (state->rotation != DRM_ROTATE_0 &&
(fb->format->format == DRM_FORMAT_RGB888 ||
@@ -170,6 +179,25 @@ static int malidp_de_plane_check(struct drm_plane *plane,
return 0;
}
+static void malidp_de_set_plane_pitches(struct malidp_plane *mp,
+ int num_planes, unsigned int pitches[3])
+{
+ int i;
+ int num_strides = num_planes;
+
+ if (!mp->layer->stride_offset)
+ return;
+
+ if (num_planes == 3)
+ num_strides = (mp->hwdev->features &
+ MALIDP_DEVICE_LV_HAS_3_STRIDES) ? 3 : 2;
+
+ for (i = 0; i < num_strides; ++i)
+ malidp_hw_write(mp->hwdev, pitches[i],
+ mp->layer->base +
+ mp->layer->stride_offset + i * 4);
+}
+
static void malidp_de_plane_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
@@ -200,9 +228,9 @@ static void malidp_de_plane_update(struct drm_plane *plane,
obj->paddr += plane->state->fb->offsets[i];
malidp_hw_write(mp->hwdev, lower_32_bits(obj->paddr), ptr);
malidp_hw_write(mp->hwdev, upper_32_bits(obj->paddr), ptr + 4);
- malidp_hw_write(mp->hwdev, plane->state->fb->pitches[i],
- mp->layer->base + MALIDP_LAYER_STRIDE);
}
+ malidp_de_set_plane_pitches(mp, ms->n_planes,
+ plane->state->fb->pitches);
malidp_hw_write(mp->hwdev, LAYER_H_VAL(src_w) | LAYER_V_VAL(src_h),
mp->layer->base + MALIDP_LAYER_SIZE);
diff --git a/drivers/gpu/drm/arm/malidp_regs.h b/drivers/gpu/drm/arm/malidp_regs.h
index e0651d28c485..aff6d4a84e99 100644
--- a/drivers/gpu/drm/arm/malidp_regs.h
+++ b/drivers/gpu/drm/arm/malidp_regs.h
@@ -81,6 +81,10 @@
#define MALIDP_DE_SYNC_WIDTH 0x8
#define MALIDP_DE_HV_ACTIVE 0xc
+/* Stride register offsets relative to Lx_BASE */
+#define MALIDP_DE_LG_STRIDE 0x18
+#define MALIDP_DE_LV_STRIDE0 0x18
+
/* macros to set values into registers */
#define MALIDP_DE_H_FRONTPORCH(x) (((x) & 0xfff) << 0)
#define MALIDP_DE_H_BACKPORCH(x) (((x) & 0x3ff) << 16)
--
2.11.0