[PATCH v6 09/12] clk: mediatek: mt6797: switch to platform device probing

[matthias.bgg@kernel.org]

From: Matthias Brugger <mbrugger@suse.com>

Switch probing for the MMSYS to support invocation to a
plain paltform device. The driver will be probed by the DRM subsystem.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
 drivers/clk/mediatek/clk-mt6797-mm.c | 43 +++++++++++++++++++---------
 1 file changed, 29 insertions(+), 14 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt6797-mm.c b/drivers/clk/mediatek/clk-mt6797-mm.c
index 8f05653b387d..1aea4f8d5a9d 100644
--- a/drivers/clk/mediatek/clk-mt6797-mm.c
+++ b/drivers/clk/mediatek/clk-mt6797-mm.c
@@ -4,13 +4,19 @@
  * Author: Kevin Chen <kevin-cw.chen@mediatek.com>
  */
 
+#include <linux/module.h>
 #include <linux/clk-provider.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <dt-bindings/clock/mt6797-clk.h>
 
 #include "clk-mtk.h"
 #include "clk-gate.h"
 
+struct clk_mt6797_mm_priv {
+	struct clk_onecell_data *clk_data;
+};
+
 static const struct mtk_gate_regs mm0_cg_regs = {
 	.set_ofs = 0x0104,
 	.clr_ofs = 0x0108,
@@ -92,23 +98,24 @@ static const struct mtk_gate mm_clks[] = {
 		 "clk26m", 3),
 };
 
-static const struct of_device_id of_match_clk_mt6797_mm[] = {
-	{ .compatible = "mediatek,mt6797-mmsys", },
-	{}
-};
-
 static int clk_mt6797_mm_probe(struct platform_device *pdev)
 {
-	struct clk_onecell_data *clk_data;
+	struct clk_mt6797_mm_priv *private;
 	int r;
-	struct device_node *node = pdev->dev.of_node;
+	struct device *parent = pdev->dev.parent;
+
+	private = devm_kzalloc(&pdev->dev, sizeof(*private), GFP_KERNEL);
+	if (!private)
+		return -ENOMEM;
 
-	clk_data = mtk_alloc_clk_data(CLK_MM_NR);
+	private->clk_data = mtk_alloc_clk_data(CLK_MM_NR);
+	platform_set_drvdata(pdev, private);
 
-	mtk_clk_register_gates(node, mm_clks, ARRAY_SIZE(mm_clks),
-			       clk_data);
+	mtk_clk_register_gates(parent->of_node, mm_clks, ARRAY_SIZE(mm_clks),
+			       private->clk_data);
 
-	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	r = of_clk_add_provider(parent->of_node, of_clk_src_onecell_get,
+			private->clk_data);
 	if (r)
 		dev_err(&pdev->dev,
 			"could not register clock provider: %s: %d\n",
@@ -117,12 +124,20 @@ static int clk_mt6797_mm_probe(struct platform_device *pdev)
 	return r;
 }
 
+static int clk_mt6797_mm_remove(struct platform_device *pdev)
+{
+	struct clk_mt6797_mm_priv *private = platform_get_drvdata(pdev);
+
+	kfree(private->clk_data);
+
+	return 0;
+}
+
 static struct platform_driver clk_mt6797_mm_drv = {
 	.probe = clk_mt6797_mm_probe,
+	.remove = clk_mt6797_mm_remove,
 	.driver = {
 		.name = "clk-mt6797-mm",
-		.of_match_table = of_match_clk_mt6797_mm,
 	},
 };
-
-builtin_platform_driver(clk_mt6797_mm_drv);
+module_platform_driver(clk_mt6797_mm_drv);
-- 
2.24.0