Re: [PATCH 4/7] drm/msm/mdp5: Add MDP5 configuration for MSM8226

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On 29/05/2023 14:59, Konrad Dybcio wrote:


On 29.05.2023 11:44, Luca Weiss wrote:
Add the required config for the v1.1 MDP5 found on MSM8226.

Signed-off-by: Luca Weiss <luca@xxxxxxxxx>
---
  drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c | 82 ++++++++++++++++++++++++++++++++
  1 file changed, 82 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c
index 2eec2d78f32a..694d54341337 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c
@@ -103,6 +103,87 @@ static const struct mdp5_cfg_hw msm8x74v1_config = {
  	.max_clk = 200000000,
  };
+static const struct mdp5_cfg_hw msm8x26_config = {
Luca, this patch looks good as-is (without diving into the values).

Dmitry, I see some things that we may improve here..

1. Rename msm8xab to msm89ab or something, it's really inconsistent
    with other drivers

2. Some values seem very common / always constant.. perhaps we could
    add some #defines like we do in DPU?

I really would not like to go the DPU way here. Maybe we can define the 'full-featured' masks, while leaving the older hardware intact.

3. Can we add some magic defines to make flush_hw_mask non-cryptic?

Sounds like a good idea, especially since we have all the defines. I'll tend to it after landing 8226.


4. We can probably use pointers in data structs and deduplicate identical
    blocks!

Let's see.


Konrad
+	.name = "msm8x26",
+	.mdp = {
+		.count = 1,
+		.caps = MDP_CAP_SMP |
+			0,
+	},
+	.smp = {
+		.mmb_count = 7,
+		.mmb_size = 4096,
+		.clients = {
+			[SSPP_VIG0] =  1,
+			[SSPP_DMA0] = 4,
+			[SSPP_RGB0] = 7,
+		},
+	},
+	.ctl = {
+		.count = 2,
+		.base = { 0x00500, 0x00600 },
+		.flush_hw_mask = 0x0003ffff,
+	},
+	.pipe_vig = {
+		.count = 1,
+		.base = { 0x01100 },
+		.caps = MDP_PIPE_CAP_HFLIP |
+			MDP_PIPE_CAP_VFLIP |
+			MDP_PIPE_CAP_SCALE |
+			MDP_PIPE_CAP_CSC   |
+			0,
+	},
+	.pipe_rgb = {
+		.count = 1,
+		.base = { 0x01d00 },
+		.caps = MDP_PIPE_CAP_HFLIP |
+			MDP_PIPE_CAP_VFLIP |
+			MDP_PIPE_CAP_SCALE |
+			0,
+	},
+	.pipe_dma = {
+		.count = 1,
+		.base = { 0x02900 },
+		.caps = MDP_PIPE_CAP_HFLIP |
+			MDP_PIPE_CAP_VFLIP |
+			0,
+	},
+	.lm = {
+		.count = 2,
+		.base = { 0x03100, 0x03d00 },
+		.instances = {
+				{ .id = 0, .pp = 0, .dspp = 0,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 1, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB },
+			     },
+		.nb_stages = 2,
+		.max_width = 2048,
+		.max_height = 0xFFFF,
+	},
+	.dspp = {
+		.count = 1,
+		.base = { 0x04500 },
+	},
+	.pp = {
+		.count = 1,
+		.base = { 0x21a00 },
+	},
+	.intf = {
+		.base = { 0x00000, 0x21200 },
+		.connect = {
+			[0] = INTF_DISABLED,
+			[1] = INTF_DSI,
+		},
+	},
+	.perf = {
+		.ab_inefficiency = 100,
+		.ib_inefficiency = 200,
+		.clk_inefficiency = 125
+	},
+	.max_clk = 200000000,
+};
+
  static const struct mdp5_cfg_hw msm8x74v2_config = {
  	.name = "msm8x74",
  	.mdp = {
@@ -1236,6 +1317,7 @@ static const struct mdp5_cfg_hw sdm660_config = {
static const struct mdp5_cfg_handler cfg_handlers_v1[] = {
  	{ .revision = 0, .config = { .hw = &msm8x74v1_config } },
+	{ .revision = 1, .config = { .hw = &msm8x26_config } },
  	{ .revision = 2, .config = { .hw = &msm8x74v2_config } },
  	{ .revision = 3, .config = { .hw = &apq8084_config } },
  	{ .revision = 6, .config = { .hw = &msm8x16_config } },


--
With best wishes
Dmitry




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