2b1c6b21b5
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Also adds support for Raspberry Pi Compute Module 3 (untested). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
143 lines
4.8 KiB
Diff
143 lines
4.8 KiB
Diff
From eb708cc358e2f94461f971012c9c477a41b01237 Mon Sep 17 00:00:00 2001
|
|
From: Eric Anholt <eric@anholt.net>
|
|
Date: Mon, 28 Dec 2015 14:34:44 -0800
|
|
Subject: [PATCH] drm/vc4: Move the plane clipping/scaling setup to a separate
|
|
function.
|
|
|
|
As we add actual scaling, this is going to get way more complicated.
|
|
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
(cherry picked from commit 5c6799942003df91801b1d2277bba34d71f99603)
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_plane.c | 78 +++++++++++++++++++++++++++--------------
|
|
1 file changed, 52 insertions(+), 26 deletions(-)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_plane.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
|
|
@@ -40,6 +40,14 @@ struct vc4_plane_state {
|
|
* hardware at vc4_crtc_atomic_flush() time.
|
|
*/
|
|
u32 __iomem *hw_dlist;
|
|
+
|
|
+ /* Clipped coordinates of the plane on the display. */
|
|
+ int crtc_x, crtc_y, crtc_w, crtc_h;
|
|
+
|
|
+ /* Offset to start scanning out from the start of the plane's
|
|
+ * BO.
|
|
+ */
|
|
+ u32 offset;
|
|
};
|
|
|
|
static inline struct vc4_plane_state *
|
|
@@ -167,22 +175,17 @@ static void vc4_dlist_write(struct vc4_p
|
|
vc4_state->dlist[vc4_state->dlist_count++] = val;
|
|
}
|
|
|
|
-/* Writes out a full display list for an active plane to the plane's
|
|
- * private dlist state.
|
|
- */
|
|
-static int vc4_plane_mode_set(struct drm_plane *plane,
|
|
- struct drm_plane_state *state)
|
|
+static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
|
|
{
|
|
struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
|
|
struct drm_framebuffer *fb = state->fb;
|
|
- struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
|
|
- u32 ctl0_offset = vc4_state->dlist_count;
|
|
- const struct hvs_format *format = vc4_get_hvs_format(fb->pixel_format);
|
|
- uint32_t offset = fb->offsets[0];
|
|
- int crtc_x = state->crtc_x;
|
|
- int crtc_y = state->crtc_y;
|
|
- int crtc_w = state->crtc_w;
|
|
- int crtc_h = state->crtc_h;
|
|
+
|
|
+ vc4_state->offset = fb->offsets[0];
|
|
+
|
|
+ vc4_state->crtc_x = state->crtc_x;
|
|
+ vc4_state->crtc_y = state->crtc_y;
|
|
+ vc4_state->crtc_w = state->crtc_w;
|
|
+ vc4_state->crtc_h = state->crtc_h;
|
|
|
|
if (state->crtc_w << 16 != state->src_w ||
|
|
state->crtc_h << 16 != state->src_h) {
|
|
@@ -194,18 +197,41 @@ static int vc4_plane_mode_set(struct drm
|
|
return -EINVAL;
|
|
}
|
|
|
|
- if (crtc_x < 0) {
|
|
- offset += drm_format_plane_cpp(fb->pixel_format, 0) * -crtc_x;
|
|
- crtc_w += crtc_x;
|
|
- crtc_x = 0;
|
|
+ if (vc4_state->crtc_x < 0) {
|
|
+ vc4_state->offset += (drm_format_plane_cpp(fb->pixel_format,
|
|
+ 0) *
|
|
+ -vc4_state->crtc_x);
|
|
+ vc4_state->crtc_w += vc4_state->crtc_x;
|
|
+ vc4_state->crtc_x = 0;
|
|
}
|
|
|
|
- if (crtc_y < 0) {
|
|
- offset += fb->pitches[0] * -crtc_y;
|
|
- crtc_h += crtc_y;
|
|
- crtc_y = 0;
|
|
+ if (vc4_state->crtc_y < 0) {
|
|
+ vc4_state->offset += fb->pitches[0] * -vc4_state->crtc_y;
|
|
+ vc4_state->crtc_h += vc4_state->crtc_y;
|
|
+ vc4_state->crtc_y = 0;
|
|
}
|
|
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+
|
|
+/* Writes out a full display list for an active plane to the plane's
|
|
+ * private dlist state.
|
|
+ */
|
|
+static int vc4_plane_mode_set(struct drm_plane *plane,
|
|
+ struct drm_plane_state *state)
|
|
+{
|
|
+ struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
|
|
+ struct drm_framebuffer *fb = state->fb;
|
|
+ struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
|
|
+ u32 ctl0_offset = vc4_state->dlist_count;
|
|
+ const struct hvs_format *format = vc4_get_hvs_format(fb->pixel_format);
|
|
+ int ret;
|
|
+
|
|
+ ret = vc4_plane_setup_clipping_and_scaling(state);
|
|
+ if (ret)
|
|
+ return ret;
|
|
+
|
|
vc4_dlist_write(vc4_state,
|
|
SCALER_CTL0_VALID |
|
|
(format->pixel_order << SCALER_CTL0_ORDER_SHIFT) |
|
|
@@ -215,8 +241,8 @@ static int vc4_plane_mode_set(struct drm
|
|
/* Position Word 0: Image Positions and Alpha Value */
|
|
vc4_dlist_write(vc4_state,
|
|
VC4_SET_FIELD(0xff, SCALER_POS0_FIXED_ALPHA) |
|
|
- VC4_SET_FIELD(crtc_x, SCALER_POS0_START_X) |
|
|
- VC4_SET_FIELD(crtc_y, SCALER_POS0_START_Y));
|
|
+ VC4_SET_FIELD(vc4_state->crtc_x, SCALER_POS0_START_X) |
|
|
+ VC4_SET_FIELD(vc4_state->crtc_y, SCALER_POS0_START_Y));
|
|
|
|
/* Position Word 1: Scaled Image Dimensions.
|
|
* Skipped due to SCALER_CTL0_UNITY scaling.
|
|
@@ -228,8 +254,8 @@ static int vc4_plane_mode_set(struct drm
|
|
SCALER_POS2_ALPHA_MODE_PIPELINE :
|
|
SCALER_POS2_ALPHA_MODE_FIXED,
|
|
SCALER_POS2_ALPHA_MODE) |
|
|
- VC4_SET_FIELD(crtc_w, SCALER_POS2_WIDTH) |
|
|
- VC4_SET_FIELD(crtc_h, SCALER_POS2_HEIGHT));
|
|
+ VC4_SET_FIELD(vc4_state->crtc_w, SCALER_POS2_WIDTH) |
|
|
+ VC4_SET_FIELD(vc4_state->crtc_h, SCALER_POS2_HEIGHT));
|
|
|
|
/* Position Word 3: Context. Written by the HVS. */
|
|
vc4_dlist_write(vc4_state, 0xc0c0c0c0);
|
|
@@ -237,7 +263,7 @@ static int vc4_plane_mode_set(struct drm
|
|
vc4_state->pw0_offset = vc4_state->dlist_count;
|
|
|
|
/* Pointer Word 0: RGB / Y Pointer */
|
|
- vc4_dlist_write(vc4_state, bo->paddr + offset);
|
|
+ vc4_dlist_write(vc4_state, bo->paddr + vc4_state->offset);
|
|
|
|
/* Pointer Context Word 0: Written by the HVS */
|
|
vc4_dlist_write(vc4_state, 0xc0c0c0c0);
|