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Subject[PATCH v7 10/13] clk: mediatek: mt6797: switch to platform device probing
Date
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>

---

Changes in v7:
- free clk_data->clks as well
- get rid of private data structure

Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None

drivers/clk/mediatek/clk-mt6797-mm.c | 34 +++++++++++++++++++---------
1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt6797-mm.c b/drivers/clk/mediatek/clk-mt6797-mm.c
index 8f05653b387d..6a3c54b6b793 100644
--- a/drivers/clk/mediatek/clk-mt6797-mm.c
+++ b/drivers/clk/mediatek/clk-mt6797-mm.c
@@ -4,8 +4,10 @@
* 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"
@@ -92,23 +94,24 @@ 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;
int r;
- struct device_node *node = pdev->dev.of_node;
+ struct device *parent = pdev->dev.parent;
+
+ clk_data = devm_kzalloc(&pdev->dev, sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data)
+ return -ENOMEM;

clk_data = mtk_alloc_clk_data(CLK_MM_NR);
+ platform_set_drvdata(pdev, clk_data);

- mtk_clk_register_gates(node, mm_clks, ARRAY_SIZE(mm_clks),
+ mtk_clk_register_gates(parent->of_node, mm_clks, ARRAY_SIZE(mm_clks),
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,
+ clk_data);
if (r)
dev_err(&pdev->dev,
"could not register clock provider: %s: %d\n",
@@ -117,12 +120,21 @@ static int clk_mt6797_mm_probe(struct platform_device *pdev)
return r;
}

+static int clk_mt6797_mm_remove(struct platform_device *pdev)
+{
+ struct clk_onecell_data *clk_data = platform_get_drvdata(pdev);
+
+ kfree(clk_data->clks);
+ kfree(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);
--
2.24.1
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