[PATCH v2 06/15] drm/mediatek: add memory mode for RDMA
From: Stu Hsieh <hidden>
Date: 2018-08-03 03:11:46
Also in:
dri-devel, linux-mediatek, lkml
Subsystem:
drm drivers, drm drivers for mediatek, the rest · Maintainers:
David Airlie, Simona Vetter, Chun-Kuang Hu, Philipp Zabel, Linus Torvalds
This patch add memory mode for RDMA If use RDMA to read data from memory, it should set memory mode to RDMA Signed-off-by: Stu Hsieh <redacted> --- drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
index 60851bb2dd63..1985035451ce 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c@@ -31,6 +31,7 @@ #define RDMA_REG_UPDATE_INT BIT(0) #define DISP_REG_RDMA_GLOBAL_CON 0x0010 #define RDMA_ENGINE_EN BIT(0) +#define RDMA_MODE_MEMORY BIT(1) #define DISP_REG_RDMA_SIZE_CON_0 0x0014 #define DISP_REG_RDMA_SIZE_CON_1 0x0018 #define DISP_REG_RDMA_TARGET_LINE 0x001c
@@ -53,6 +54,7 @@ struct mtk_disp_rdma { struct mtk_ddp_comp ddp_comp; struct drm_crtc *crtc; const struct mtk_disp_rdma_data *data; + bool rdma_memory_mode; }; static inline struct mtk_disp_rdma *comp_to_rdma(struct mtk_ddp_comp *comp)
@@ -121,10 +123,15 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width, unsigned int threshold; unsigned int reg; struct mtk_disp_rdma *rdma = comp_to_rdma(comp); + bool *rdma_memory_mode = comp->comp_mode; rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0, 0xfff, width); rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_1, 0xfffff, height); + if (*rdma_memory_mode == true) + rdma_update_bits(comp, DISP_REG_RDMA_GLOBAL_CON, + RDMA_MODE_MEMORY, RDMA_MODE_MEMORY); + /* * Enable FIFO underflow since DSI and DPI can't be blocked. * Keep the FIFO pseudo size reset default of 8 KiB. Set the
--
2.12.5.2.gbdf23ab