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drm/mediatek: dpi: Add dp_intf support 

Dpintf is the displayport interface hardware unit. This unit is similar
to dpi and can reuse most of the code.

This patch adds support for mt8195-dpintf to this dpi driver. Main
differences are:
 - 4 pixels for one iteration for dp_intf while dpi is 1 pixel for one
   iteration.
 - Input of dp_intf is two pixels per iteration.
 - Some register contents differ slightly between the two components.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20220705102530.1344-6-rex-bc.chen@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
Guillaume Ranquet 2022-07-05 18:25:30 +08:00 committed by Chun-Kuang Hu
parent 49ecbb78dd
commit d86c156891
5 changed files with 51 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/gpu/drm/mediatek/mtk_dpi.c
View File

@ -852,6 +852,16 @@ static unsigned int mt8183_calculate_factor(int clock)
return 2;
}
static unsigned int mt8195_dpintf_calculate_factor(int clock)
{
if (clock < 70000)
return 4;
else if (clock < 200000)
return 2;
else
return 1;
}
static const u32 mt8173_output_fmts[] = {
MEDIA_BUS_FMT_RGB888_1X24,
};
@ -861,6 +871,11 @@ static const u32 mt8183_output_fmts[] = {
MEDIA_BUS_FMT_RGB888_2X12_BE,
};
static const u32 mt8195_output_fmts[] = {
MEDIA_BUS_FMT_RGB888_1X24,
MEDIA_BUS_FMT_YUYV8_1X16,
};
static const struct mtk_dpi_conf mt8173_conf = {
.cal_factor = mt8173_calculate_factor,
.reg_h_fre_con = 0xe0,
@ -930,6 +945,20 @@ static const struct mtk_dpi_conf mt8192_conf = {
.csc_enable_bit = CSC_ENABLE,
};
static const struct mtk_dpi_conf mt8195_dpintf_conf = {
.cal_factor = mt8195_dpintf_calculate_factor,
.max_clock_khz = 600000,
.output_fmts = mt8195_output_fmts,
.num_output_fmts = ARRAY_SIZE(mt8195_output_fmts),
.pixels_per_iter = 4,
.input_2pixel = true,
.dimension_mask = DPINTF_HPW_MASK,
.hvsize_mask = DPINTF_HSIZE_MASK,
.channel_swap_shift = DPINTF_CH_SWAP,
.yuv422_en_bit = DPINTF_YUV422_EN,
.csc_enable_bit = DPINTF_CSC_ENABLE,
};
static int mtk_dpi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -1052,6 +1081,9 @@ static const struct of_device_id mtk_dpi_of_ids[] = {
{ .compatible = "mediatek,mt8192-dpi",
.data = &mt8192_conf,
},
{ .compatible = "mediatek,mt8195-dp-intf",
.data = &mt8195_dpintf_conf,
},
{ },
};
MODULE_DEVICE_TABLE(of, mtk_dpi_of_ids);

11
drivers/gpu/drm/mediatek/mtk_dpi_regs.h
View File

@ -40,10 +40,13 @@
#define FAKE_DE_LEVEN BIT(21)
#define FAKE_DE_RODD BIT(22)
#define FAKE_DE_REVEN BIT(23)
#define DPINTF_YUV422_EN BIT(24)
#define DPINTF_CSC_ENABLE BIT(26)
#define DPINTF_INPUT_2P_EN BIT(29)
#define DPI_OUTPUT_SETTING 0x14
#define CH_SWAP 0
#define DPINTF_CH_SWAP 1
#define CH_SWAP_MASK (0x7 << 0)
#define SWAP_RGB 0x00
#define SWAP_GBR 0x01
@ -81,8 +84,10 @@
#define DPI_SIZE 0x18
#define HSIZE 0
#define HSIZE_MASK (0x1FFF << 0)
#define DPINTF_HSIZE_MASK (0xFFFF << 0)
#define VSIZE 16
#define VSIZE_MASK (0x1FFF << 16)
#define DPINTF_VSIZE_MASK (0xFFFF << 16)
#define DPI_DDR_SETTING 0x1C
#define DDR_EN BIT(0)
@ -94,24 +99,30 @@
#define DPI_TGEN_HWIDTH 0x20
#define HPW 0
#define HPW_MASK (0xFFF << 0)
#define DPINTF_HPW_MASK (0xFFFF << 0)
#define DPI_TGEN_HPORCH 0x24
#define HBP 0
#define HBP_MASK (0xFFF << 0)
#define DPINTF_HBP_MASK (0xFFFF << 0)
#define HFP 16
#define HFP_MASK (0xFFF << 16)
#define DPINTF_HFP_MASK (0xFFFF << 16)
#define DPI_TGEN_VWIDTH 0x28
#define DPI_TGEN_VPORCH 0x2C
#define VSYNC_WIDTH_SHIFT 0
#define VSYNC_WIDTH_MASK (0xFFF << 0)
#define DPINTF_VSYNC_WIDTH_MASK (0xFFFF << 0)
#define VSYNC_HALF_LINE_SHIFT 16
#define VSYNC_HALF_LINE_MASK BIT(16)
#define VSYNC_BACK_PORCH_SHIFT 0
#define VSYNC_BACK_PORCH_MASK (0xFFF << 0)
#define DPINTF_VSYNC_BACK_PORCH_MASK (0xFFFF << 0)
#define VSYNC_FRONT_PORCH_SHIFT 16
#define VSYNC_FRONT_PORCH_MASK (0xFFF << 16)
#define DPINTF_VSYNC_FRONT_PORCH_MASK (0xFFFF << 16)
#define DPI_BG_HCNTL 0x30
#define BG_RIGHT (0x1FFF << 0)

4
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
View File

@ -407,6 +407,7 @@ static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = {
[MTK_DISP_RDMA] = "rdma",
[MTK_DISP_UFOE] = "ufoe",
[MTK_DISP_WDMA] = "wdma",
[MTK_DP_INTF] = "dp-intf",
[MTK_DPI] = "dpi",
[MTK_DSI] = "dsi",
};
@ -425,6 +426,8 @@ static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_COLOR0] = { MTK_DISP_COLOR, 0, &ddp_color },
[DDP_COMPONENT_COLOR1] = { MTK_DISP_COLOR, 1, &ddp_color },
[DDP_COMPONENT_DITHER0] = { MTK_DISP_DITHER, 0, &ddp_dither },
[DDP_COMPONENT_DP_INTF0] = { MTK_DP_INTF, 0, &ddp_dpi },
[DDP_COMPONENT_DP_INTF1] = { MTK_DP_INTF, 1, &ddp_dpi },
[DDP_COMPONENT_DPI0] = { MTK_DPI, 0, &ddp_dpi },
[DDP_COMPONENT_DPI1] = { MTK_DPI, 1, &ddp_dpi },
[DDP_COMPONENT_DSC0] = { MTK_DISP_DSC, 0, &ddp_dsc },
@ -548,6 +551,7 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp,
type == MTK_DISP_PWM ||
type == MTK_DISP_RDMA ||
type == MTK_DPI ||
type == MTK_DP_INTF ||
type == MTK_DSI)
return 0;

1
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
View File

@ -36,6 +36,7 @@ enum mtk_ddp_comp_type {
MTK_DISP_UFOE,
MTK_DISP_WDMA,
MTK_DPI,
MTK_DP_INTF,
MTK_DSI,
MTK_DDP_COMP_TYPE_MAX,
};

3
drivers/gpu/drm/mediatek/mtk_drm_drv.c
View File

@ -633,6 +633,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
.data = (void *)MTK_DPI },
{ .compatible = "mediatek,mt8192-dpi",
.data = (void *)MTK_DPI },
{ .compatible = "mediatek,mt8195-dp-intf",
.data = (void *)MTK_DP_INTF },
{ .compatible = "mediatek,mt2701-dsi",
.data = (void *)MTK_DSI },
{ .compatible = "mediatek,mt8173-dsi",
@ -772,6 +774,7 @@ static int mtk_drm_probe(struct platform_device *pdev)
comp_type == MTK_DISP_OVL ||
comp_type == MTK_DISP_OVL_2L ||
comp_type == MTK_DISP_RDMA ||
comp_type == MTK_DP_INTF ||
comp_type == MTK_DPI ||
comp_type == MTK_DSI) {
dev_info(dev, "Adding component match for %pOF\n",