Re: [v2 3/3] clk: mediatek: Integrate vppsys with mtk-mmsys in MT8195

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Il 10/01/22 01:59, Chun-Jie Chen ha scritto:
Integrate vpp0 and vpp1 with mtk-mmsys driver which
will populate device by platform_device_register_data
to start vppsys clock driver.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@xxxxxxxxxxxx>

Hello Chun-Jie,

I agree with this series and I would be happy to give you my R-b, but
this patch will make these clocks to *never* probe in in the targeted
kernel version.

You forgot to mention that this patch will break vpp0/vpp1 clocks entirely
unless applied on top of patch series [1].

Please, either mention that said series is *required* for this one to work
as expected, or move series [1], patches 6 and 7 to this series instead;
since the MDP3 driver will need quite a while to get merged, I would suggest
to move the patches here, as to get something "complete" to merge.

[1]: https://patchwork.kernel.org/project/linux-mediatek/list/?series=568283

---
  drivers/clk/mediatek/clk-mt8195-vpp0.c | 42 +++++++++++++++++---------
  drivers/clk/mediatek/clk-mt8195-vpp1.c | 42 +++++++++++++++++---------
  2 files changed, 56 insertions(+), 28 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt8195-vpp0.c b/drivers/clk/mediatek/clk-mt8195-vpp0.c
index c3241466a8d0..68c375bfce8b 100644
--- a/drivers/clk/mediatek/clk-mt8195-vpp0.c
+++ b/drivers/clk/mediatek/clk-mt8195-vpp0.c
@@ -86,25 +86,39 @@ static const struct mtk_gate vpp0_clks[] = {
  	GATE_VPP0_2(CLK_VPP0_WARP1_MDP_DL_ASYNC, "vpp0_warp1_mdp_dl_async", "top_wpe_vpp", 3),
  };
-static const struct mtk_clk_desc vpp0_desc = {
-	.clks = vpp0_clks,
-	.num_clks = ARRAY_SIZE(vpp0_clks),
-};
+static int clk_mt8195_vpp0_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->parent->of_node;
+	struct clk_onecell_data *clk_data;
+	int r;
-static const struct of_device_id of_match_clk_mt8195_vpp0[] = {
-	{
-		.compatible = "mediatek,mt8195-vppsys0",
-		.data = &vpp0_desc,
-	}, {
-		/* sentinel */
-	}
-};
+	clk_data = mtk_alloc_clk_data(CLK_VPP0_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
+
+	r = mtk_clk_register_gates(node, vpp0_clks, ARRAY_SIZE(vpp0_clks), clk_data);
+	if (r)
+		goto free_vpp0_data;
+
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		goto unregister_clk;
+
+	return r;
+
+unregister_clk:
+	mtk_clk_unregister(clk_data);
+
+free_vpp0_data:
+	mtk_free_clk_data(clk_data);
+	return r;
+}
static struct platform_driver clk_mt8195_vpp0_drv = {
-	.probe = mtk_clk_simple_probe,
+	.probe = clk_mt8195_vpp0_probe,
  	.driver = {
  		.name = "clk-mt8195-vpp0",
-		.of_match_table = of_match_clk_mt8195_vpp0,
  	},
  };
  builtin_platform_driver(clk_mt8195_vpp0_drv);
diff --git a/drivers/clk/mediatek/clk-mt8195-vpp1.c b/drivers/clk/mediatek/clk-mt8195-vpp1.c
index ce0b9a40a179..237077c60f54 100644
--- a/drivers/clk/mediatek/clk-mt8195-vpp1.c
+++ b/drivers/clk/mediatek/clk-mt8195-vpp1.c
@@ -84,25 +84,39 @@ static const struct mtk_gate vpp1_clks[] = {
  	GATE_VPP1_1(CLK_VPP1_VPP_SPLIT_26M, "vpp1_vpp_split_26m", "clk26m", 26),
  };
-static const struct mtk_clk_desc vpp1_desc = {
-	.clks = vpp1_clks,
-	.num_clks = ARRAY_SIZE(vpp1_clks),
-};
+static int clk_mt8195_vpp1_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->parent->of_node;
+	struct clk_onecell_data *clk_data;
+	int r;
-static const struct of_device_id of_match_clk_mt8195_vpp1[] = {
-	{
-		.compatible = "mediatek,mt8195-vppsys1",
-		.data = &vpp1_desc,
-	}, {
-		/* sentinel */
-	}
-};
+	clk_data = mtk_alloc_clk_data(CLK_VPP1_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
+
+	r = mtk_clk_register_gates(node, vpp1_clks, ARRAY_SIZE(vpp1_clks), clk_data);
+	if (r)
+		goto free_vpp1_data;
+
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		goto unregister_clk;
+
+	return r;
+
+unregister_clk:
+	mtk_clk_unregister(clk_data);
+
+free_vpp1_data:
+	mtk_free_clk_data(clk_data);
+	return r;
+}
static struct platform_driver clk_mt8195_vpp1_drv = {
-	.probe = mtk_clk_simple_probe,
+	.probe = clk_mt8195_vpp1_probe,
  	.driver = {
  		.name = "clk-mt8195-vpp1",
-		.of_match_table = of_match_clk_mt8195_vpp1,
  	},
  };
  builtin_platform_driver(clk_mt8195_vpp1_drv);



--
AngeloGioacchino Del Regno
Software Engineer

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Platinum Building, St John's Innovation Park, Cambridge CB4 0DS, UK
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