[PATCH v5 03/12] clk: mediatek: mt8173: switch mmsys to platform device probing

[matthias . bgg]

From: Matthias Brugger <mbrug...@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 <mbrug...@suse.com>
---
 drivers/clk/mediatek/clk-mt8173.c | 51 ++++++++++++++++++++++++++-----
 1 file changed, 44 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt8173.c 
b/drivers/clk/mediatek/clk-mt8173.c
index 96c292c3e440..10b6a0251123 100644
--- a/drivers/clk/mediatek/clk-mt8173.c
+++ b/drivers/clk/mediatek/clk-mt8173.c
@@ -13,8 +13,11 @@
  */
 
 #include <linux/clk.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include "clk-mtk.h"
 #include "clk-gate.h"
@@ -791,7 +794,7 @@ static const struct mtk_gate_regs mm1_cg_regs __initconst = 
{
                .ops = &mtk_clk_gate_ops_setclr,                \
        }
 
-static const struct mtk_gate mm_clks[] __initconst = {
+static const struct mtk_gate mm_clks[] = {
        /* MM0 */
        GATE_MM0(CLK_MM_SMI_COMMON, "mm_smi_common", "mm_sel", 0),
        GATE_MM0(CLK_MM_SMI_LARB0, "mm_smi_larb0", "mm_sel", 1),
@@ -1152,22 +1155,56 @@ static void __init mtk_imgsys_init(struct device_node 
*node)
 }
 CLK_OF_DECLARE(mtk_imgsys, "mediatek,mt8173-imgsys", mtk_imgsys_init);
 
-static void __init mtk_mmsys_init(struct device_node *node)
-{
+struct mtk_mmsys_priv {
        struct clk_onecell_data *clk_data;
+};
+
+static int mtk_mmsys_probe(struct platform_device *pdev)
+{
        int r;
+       struct device_node *node;
+       struct mtk_mmsys_priv *private;
+
+       node = pdev->dev.parent->of_node;
 
-       clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
+       private = devm_kzalloc(&pdev->dev, sizeof(*private), GFP_KERNEL);
+       if (!private)
+               return -ENOMEM;
+
+       private->clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
+
+       platform_set_drvdata(pdev, private);
 
        mtk_clk_register_gates(node, mm_clks, ARRAY_SIZE(mm_clks),
-                                               clk_data);
+                                       private->clk_data);
 
-       r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+       r = of_clk_add_provider(node, of_clk_src_onecell_get,
+                                       private->clk_data);
        if (r)
                pr_err("%s(): could not register clock provider: %d\n",
                        __func__, r);
+
+       return r;
+}
+
+static int mtk_mmsys_remove(struct platform_device *pdev)
+{
+       struct mtk_mmsys_priv *private = platform_get_drvdata(pdev);
+
+       kfree(private->clk_data);
+       kfree(private);
+
+       return 0;
 }
-CLK_OF_DECLARE(mtk_mmsys, "mediatek,mt8173-mmsys", mtk_mmsys_init);
+
+static struct platform_driver clk_mt8173_mm_drv = {
+       .probe = mtk_mmsys_probe,
+       .probe = mtk_mmsys_remove,
+       .driver = {
+               .name = "clk-mt8173-mm",
+       },
+};
+module_platform_driver(clk_mt8173_mm_drv);
 
 static void __init mtk_vdecsys_init(struct device_node *node)
 {
-- 
2.19.1

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