From: Edmund Dea <edmund.j.dea@xxxxxxxxx>
Video artifacts appear during playback as horizontal lines that
sporadically appear every few frames. Issue was caused by writing to
LCD_LAYERn_CFG register twice during plane updates. Issue is fixed by
writing to LCD_LAYERn_CFG only once.
Removed plane_init_status so that there are no initialization
dependencies during plane updates.
Signed-off-by: Edmund Dea <edmund.j.dea@xxxxxxxxx>
Reviewed-by: Bob Paauwe <bob.j.paauwe@xxxxxxxxx>
---
drivers/gpu/drm/kmb/kmb_plane.c | 81 +++++++++++++++++++----------------------
1 file changed, 38 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/kmb/kmb_plane.c b/drivers/gpu/drm/kmb/kmb_plane.c
index 8aa48b5..ebf29b2 100644
--- a/drivers/gpu/drm/kmb/kmb_plane.c
+++ b/drivers/gpu/drm/kmb/kmb_plane.c
@@ -118,7 +118,6 @@ static const u32 csc_coef_lcd[] = {
};
/*plane initialization status */
-static int plane_init_status[KMB_MAX_PLANES] = { 0, 0, 0, 0 };
static unsigned int check_pixel_format(struct drm_plane *plane, u32 format)
{
@@ -321,7 +320,6 @@ static void config_csc(struct kmb_drm_private *dev_p, int plane_id)
kmb_write_lcd(dev_p, LCD_LAYERn_CSC_OFF1(plane_id), csc_coef_lcd[9]);
kmb_write_lcd(dev_p, LCD_LAYERn_CSC_OFF2(plane_id), csc_coef_lcd[10]);
kmb_write_lcd(dev_p, LCD_LAYERn_CSC_OFF3(plane_id), csc_coef_lcd[11]);
- kmb_set_bitmask_lcd(dev_p, LCD_LAYERn_CFG(plane_id), LCD_LAYER_CSC_EN);
}
#endif
@@ -410,19 +408,27 @@ static void kmb_plane_atomic_update(struct drm_plane *plane,
addr[V_PLANE]);
}
}
- if (plane_init_status[plane_id] != INITIALIZED) {
- kmb_write_lcd(dev_p, LCD_LAYERn_WIDTH(plane_id), src_w - 1);
- kmb_write_lcd(dev_p, LCD_LAYERn_HEIGHT(plane_id), src_h - 1);
- kmb_write_lcd(dev_p, LCD_LAYERn_COL_START(plane_id), crtc_x);
- kmb_write_lcd(dev_p, LCD_LAYERn_ROW_START(plane_id), crtc_y);
-
- val = set_pixel_format(fb->format->format);
- val |= set_bits_per_pixel(fb->format);
- /*CHECKME Leon drvr sets it to 100 try this for now */
- val |= LCD_LAYER_FIFO_100;
- kmb_write_lcd(dev_p, LCD_LAYERn_CFG(plane_id), val);
-
- switch (plane_id) {
+
+ kmb_write_lcd(dev_p, LCD_LAYERn_WIDTH(plane_id), src_w-1);
+ kmb_write_lcd(dev_p, LCD_LAYERn_HEIGHT(plane_id), src_h-1);
+ kmb_write_lcd(dev_p, LCD_LAYERn_COL_START(plane_id), crtc_x);
+ kmb_write_lcd(dev_p, LCD_LAYERn_ROW_START(plane_id), crtc_y);
+
+ val = set_pixel_format(fb->format->format);
+ val |= set_bits_per_pixel(fb->format);
+ /*CHECKME Leon drvr sets it to 100 try this for now */
+ val |= LCD_LAYER_FIFO_100;
+
+ if (val & LCD_LAYER_PLANAR_STORAGE) {
+ val |= LCD_LAYER_CSC_EN;
+
+ /*enable CSC if input is planar and output is RGB */
+ config_csc(dev_p, plane_id);
+ }
+
+ kmb_write_lcd(dev_p, LCD_LAYERn_CFG(plane_id), val);
+
+ switch (plane_id) {
case LAYER_0:
ctrl = LCD_CTRL_VL1_ENABLE;
break;
@@ -435,36 +441,28 @@ static void kmb_plane_atomic_update(struct drm_plane *plane,
case LAYER_3:
ctrl = LCD_CTRL_GL2_ENABLE;
break;
- }
+ }
- ctrl |= LCD_CTRL_PROGRESSIVE | LCD_CTRL_TIM_GEN_ENABLE
- | LCD_CTRL_CONTINUOUS | LCD_CTRL_OUTPUT_ENABLED;
+ ctrl |= LCD_CTRL_PROGRESSIVE | LCD_CTRL_TIM_GEN_ENABLE
+ | LCD_CTRL_CONTINUOUS | LCD_CTRL_OUTPUT_ENABLED;
- /*LCD is connected to MIPI on kmb
- * Therefore this bit is required for DSI Tx
- */
- ctrl |= LCD_CTRL_VHSYNC_IDLE_LVL;
+ /*LCD is connected to MIPI on kmb
+ * Therefore this bit is required for DSI Tx
+ */
+ ctrl |= LCD_CTRL_VHSYNC_IDLE_LVL;
- kmb_set_bitmask_lcd(dev_p, LCD_CONTROL, ctrl);
+ kmb_set_bitmask_lcd(dev_p, LCD_CONTROL, ctrl);
- /* FIXME no doc on how to set output format,these values are
- * taken from the Myriadx tests
- */
- out_format |= LCD_OUTF_FORMAT_RGB888;
+ /* FIXME no doc on how to set output format,these values are
+ * taken from the Myriadx tests
+ */
+ out_format |= LCD_OUTF_FORMAT_RGB888;
- if (val & LCD_LAYER_PLANAR_STORAGE) {
- /*enable CSC if input is planar and output is RGB */
- config_csc(dev_p, plane_id);
- }
-
- /*set background color to white */
- // kmb_write_lcd(dev_p, LCD_BG_COLOUR_LS, 0xffffff);
- /*leave RGB order,conversion mode and clip mode to default */
- /* do not interleave RGB channels for mipi Tx compatibility */
- out_format |= LCD_OUTF_MIPI_RGB_MODE;
- kmb_write_lcd(dev_p, LCD_OUT_FORMAT_CFG, out_format);
- plane_init_status[plane_id] = INITIALIZED;
- }
+ /* Leave RGB order,conversion mode and clip mode to default */
+ /* do not interleave RGB channels for mipi Tx compatibility */
+ out_format |= LCD_OUTF_MIPI_RGB_MODE;
+ // out_format |= LCD_OUTF_SYNC_MODE;
+ kmb_write_lcd(dev_p, LCD_OUT_FORMAT_CFG, out_format);
dma_cfg = LCD_DMA_LAYER_ENABLE | LCD_DMA_LAYER_VSTRIDE_EN |
LCD_DMA_LAYER_CONT_UPDATE | LCD_DMA_LAYER_AXI_BURST_16;
@@ -474,9 +472,6 @@ static void kmb_plane_atomic_update(struct drm_plane *plane,
DRM_DEBUG("%s : %d dma_cfg=0x%x LCD_DMA_CFG=0x%x\n",
__func__, __LINE__, dma_cfg,
kmb_read_lcd(dev_p, LCD_LAYERn_DMA_CFG(plane_id)));
-
- return;
-
#endif
}
--
2.7.4
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