[PATCH v7 07/13] clk: mediatek: mt2701: switch mmsys to platform device probing

From: matthias . bgg
Date: Thu Feb 13 2020 - 15:20:43 EST


From: Matthias Brugger <mbrugger@xxxxxxxx>

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@xxxxxxxx>

---

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-mt2701-mm.c | 34 +++++++++++++++++++---------
1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt2701-mm.c b/drivers/clk/mediatek/clk-mt2701-mm.c
index 054b597d4a73..eab7dd4735ad 100644
--- a/drivers/clk/mediatek/clk-mt2701-mm.c
+++ b/drivers/clk/mediatek/clk-mt2701-mm.c
@@ -4,8 +4,10 @@
* Author: Shunli Wang <shunli.wang@xxxxxxxxxxxx>
*/

+#include <linux/module.h>
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
+#include <linux/slab.h>

#include "clk-mtk.h"
#include "clk-gate.h"
@@ -79,21 +81,21 @@ static const struct mtk_gate mm_clks[] = {
GATE_DISP1(CLK_MM_TVE_FMM, "mm_tve_fmm", "mm_sel", 14),
};

-static const struct of_device_id of_match_clk_mt2701_mm[] = {
- { .compatible = "mediatek,mt2701-mmsys", },
- {}
-};
-
static int clk_mt2701_mm_probe(struct platform_device *pdev)
{
- struct clk_onecell_data *clk_data;
int r;
- struct device_node *node = pdev->dev.of_node;
+ struct device_node *node = pdev->dev.parent->of_node;
+ struct clk_onecell_data *clk_data;
+
+ 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);

- mtk_clk_register_gates(node, mm_clks, ARRAY_SIZE(mm_clks),
- clk_data);
+ platform_set_drvdata(pdev, clk_data);
+
+ mtk_clk_register_gates(node, mm_clks, ARRAY_SIZE(mm_clks), clk_data);

r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
if (r)
@@ -104,12 +106,22 @@ static int clk_mt2701_mm_probe(struct platform_device *pdev)
return r;
}

+static int clk_mt2701_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_mt2701_mm_drv = {
.probe = clk_mt2701_mm_probe,
+ .remove = clk_mt2701_mm_remove,
.driver = {
.name = "clk-mt2701-mm",
- .of_match_table = of_match_clk_mt2701_mm,
},
};

-builtin_platform_driver(clk_mt2701_mm_drv);
+module_platform_driver(clk_mt2701_mm_drv);
--
2.24.1