Il 16/10/23 12:40, Hsiao Chien Sung ha scritto:
Padding is a new display module on MT8188, it provides ability
to add pixels to width and height of a layer with specified colors.
Due to hardware design, Mixer in VDOSYS1 requires width of a layer
to be 2-pixel-align, or 4-pixel-align when ETHDR is enabled,
we need Padding to deal with odd width.
Signed-off-by: Hsiao Chien Sung <[email protected]>
---
drivers/gpu/drm/mediatek/Makefile | 3 +-
drivers/gpu/drm/mediatek/mtk_disp_drv.h | 4 +
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +-
drivers/gpu/drm/mediatek/mtk_padding.c | 160 ++++++++++++++++++++++++
5 files changed, 168 insertions(+), 2 deletions(-)
create mode 100644 drivers/gpu/drm/mediatek/mtk_padding.c
diff --git a/drivers/gpu/drm/mediatek/Makefile
b/drivers/gpu/drm/mediatek/Makefile
index d4d193f60271..5e4436403b8d 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -16,7 +16,8 @@ mediatek-drm-y := mtk_disp_aal.o \
mtk_dsi.o \
mtk_dpi.o \
mtk_ethdr.o \
- mtk_mdp_rdma.o
+ mtk_mdp_rdma.o \
+ mtk_padding.o
obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index bf06ccb65652..e2b602037ac3 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -159,4 +159,8 @@ void mtk_mdp_rdma_config(struct device *dev, struct
mtk_mdp_rdma_cfg *cfg,
const u32 *mtk_mdp_rdma_get_formats(struct device *dev);
size_t mtk_mdp_rdma_get_num_formats(struct device *dev);
+int mtk_padding_clk_enable(struct device *dev);
+void mtk_padding_clk_disable(struct device *dev);
+void mtk_padding_start(struct device *dev);
+void mtk_padding_stop(struct device *dev);
#endif
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index cdce165c092e..62e6e9785443 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -1025,6 +1025,7 @@ static struct platform_driver * const mtk_drm_drivers[] =
{
&mtk_dsi_driver,
&mtk_ethdr_driver,
&mtk_mdp_rdma_driver,
+ &mtk_padding_driver,
};
static int __init mtk_drm_init(void)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index 8dca68ea1b94..d2efd715699f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -72,5 +72,5 @@ extern struct platform_driver mtk_dpi_driver;
extern struct platform_driver mtk_dsi_driver;
extern struct platform_driver mtk_ethdr_driver;
extern struct platform_driver mtk_mdp_rdma_driver;
-
+extern struct platform_driver mtk_padding_driver;
#endif /* MTK_DRM_DRV_H */
diff --git a/drivers/gpu/drm/mediatek/mtk_padding.c
b/drivers/gpu/drm/mediatek/mtk_padding.c
new file mode 100644
index 000000000000..fa2e7fc9c7bd
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_padding.c
@@ -0,0 +1,160 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2023 MediaTek Inc.
+ */
+
..snip..
+
+static const struct of_device_id mtk_padding_driver_dt_match[] = {
+ { .compatible = "mediatek,mt8188-padding" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mtk_padding_driver_dt_match);
+
+struct platform_driver mtk_padding_driver = {
+ .probe = mtk_padding_probe,
+ .remove = mtk_padding_remove,
+ .driver = {
+ .name = "mediatek-padding",
Please let's be consistent with the driver names, this should be
"mediatek-disp-padding".
After changing that,
Reviewed-by: AngeloGioacchino Del Regno
<[email protected]>
